Histologie Preparation (Pr. Chhut Sereyvathana)

/90

1 / 90

Identify the INCORRECT statement

a. The prophase of primary spermatocytes is extremely prolonged.

b. Each seminiferous tubule is about 30 to 80 cm long.

c. By the first meiotic division B-spermatogonia give rise to primary spermatocytes.

d. The ducts which form the rete testis connect the tubuli recti with the ductuli efferentes.

e. Differences in the height of the epithelium give the lumen of the ductuli efferentes an irregular outline.

2 / 90

Identify the CORRECT statement

a. A distinct zona pelucida separates the oocyte and follicular cells of primordial ovarian follicles.

b. The corpus albicans of the ovary is the functional homologue of the tunica albuginea in males.

c. The granulosa cells of the ovarian follicle secrete progesterone.

d. The term "atresia" refers to the degeneration of follicles during development and adult life.

e. Progesterone and oestrogen are the main stimulants of milk secretion in the mammary gland.

3 / 90

Which of the following layers lies nearest the dermis?

a. stratum spinosum or stratum Malpighii.

b. stratum granulosum.

c. stratum lucidum.

d. stratum basale or stratum germinativum.

e. stratum corneum.

4 / 90

Identify the INCORRECT statement

a. Progesterone and oestrogen are the main stimulants of milk secretion in the mammary gland.

b. Prolactin and oxytocin are the main stimulants of milk secretion in the mammary gland.

c. The basalis of the endometrium regenerates the functionalis after menstruation.

d. The mammary glands are modified glands of the skin.

e. Primordial ovarian follicles are characterized by a single layer of flattened follicular cells which surround the oocyte.

5 / 90

Arteries which form arches along the border between the cortex and the medulla of the kidney are called:

a. interlobar arteries.

b. interlobular arteries.

c. arcuate arteries.

d. afferent arteries.

e. vasa recta.

6 / 90

Podocytes are:

a. simple squamous epithelial cells.

b. simple columnar epithelial cells.

c. simple cuboidal epithelial cells.

d. not epithelial cells.

e. unique epithelial cells with many interdigitating processes.

7 / 90

Identify the INCORRECT statement(5)

a. An inner layer of circular smooth muscle and an outer layer of longitudinal smooth muscle are found in both the ureter and bladder.

b. Renin is released by juxtaglomerular cells which surround the afferent arteriole of the glomerulus.

c. The increase in the surface area of proximal tubule cells by numerous long microvilli facilitates the absorption of nutritionally valuable substances from the primary urine.

d. The macula densa is formed by a specialized section of the epithelium lining the distal tubule as it contacts the glomerulus and its afferent and efferent arterioles.

e. The second meiotic division of secondary spermatocytes will give rise the spermatids.

8 / 90

Which cells secrete a product which converts angiotensinogen to angiotensin?

a. podocytes.

b. epithelial cells of proximal and distal convoluted tubules.

c. juxtaglomerular cells.

d. epithelial cells of collecting duct.

e. epithelial cells of Bowman's capsule.

9 / 90

Identify the CORRECT statement

a. A distinct zona pelucida separates the oocyte and follicular cells of primordial follicles.

b. A fluid filled hollow, the antrum, is a characteristic feature of primary follicles.

c. The tubuli recti join the ductuli efferentes to the ductus epididymis.

d. After ovulation, thecal cells and granulosa cells form the corpus luteum.

e. Hormone production of the corpus luteum stops after the implantation of the embryo.

10 / 90

10)

Identify the CORRECT statement(3)

a. Hormone production of the corpus luteum stops after the implantation of the embryo.

b. The secondary ovarian follicle contains no antrum.

c. "Tertiary follicle", "preovulatory follicle" and "Graafian follicle" are synonymous terms.

d. A distinct zona pelucida separates the oocyte and follicular cells of primordial ovarian follicles.

e. The infundibulum of the oviduct passes through the wall of the uterus.

11 / 90

11)

Glomerular capillaries are supported on the outside (adjacent to the urinary space) by:

a. juxtaglomerular cells.

b. podocyte foot processes.

c. fibroblasts

d. mesangial cells.

e. pericytes

12 / 90

12)

The basement membrane lies between:

a. epidermis and dermis.

b. papillary and reticular layers of dermis.

c. stratum spinosum and stratum granulosum.

d. stratum basale and stratum spinosum.

e. stratum granulosum and stratum corneum.

13 / 90

13)

Transitional epithelium lines all of the following EXCEPT the:

a. proximal urethra.

b. bladder.

c. renal pelvis.

d. ureter.

e. Bowman's capsule.

14 / 90

14)

Vessels which connect glomerular capillaries with peritubular capillaries are called:

a. efferent arterioles.

b. vasa recta.

c. peritubular capillaries.

d. arcuate arteries.

e. afferent arterioles.

15 / 90

15)

Which layer is exceptionally thick in so-called “thick skin” (i.e., palmar and plantar skin)?

a. stratum basale of epidermis.

b. dermis

c. papillary dermis

d. stratum corneum of epidermis

e. hypodermis

16 / 90

16)

The lumen of glomerular capillaries is lined by:

a. fenestrated endothelium.

b. mesangial cells.

c. juxtaglomerular cells.

d. continuous endothelium.

e. podocytes foot processes.

17 / 90

17)

Mesangial cells are:

a. simple columnar epithelial cells.

b. not epithelial cells.

c. simple cuboidal epithelial cells.

d. simple squamous epithelial cells.

e. unique epithelial cells with many interdigitating processes.

18 / 90

18)

Which of the following is CORRECT regarding the stratum spinosum?

a. Merkel cells are the outermost sentinels of the cellular immune system.

b. The cells of the stratum spinosum are flat without nuclei.

c. Langerhans cells are found mostly in the stratum spinosum.

d. The stratum spinosum is formed from daughter cells of the stratum corneum.

e. The stratum spinosum sits between the stratum corneum and the stratum granulosum.

19 / 90

19)

Which of the following consists of stratified (two-layered) cuboidal epithelium?

a. hair follicle.

b. secretory portion of sweat gland.

c. arrector pili muscle.

d. duct of sweat gland.

e. sebaceous gland.

20 / 90

20)

Smooth muscle cells of renal arterioles which are modified for endocrine secretion are called:

a. juxtaglomerular cells.

b. podocytes

c. mesangial cells.

d. pericytes

e. fibroblasts

21 / 90

21)

The macula densa consists of:

a. modified smooth muscle cells.

b. densely packed collagen fibers in the juxtaglomerular interstitium.

c. extraglomerular mesangial cells.

d. closely-packed nuclei in the epithelium of the distal convoluted tubule.

e. closely-packed nuclei in the epithelium of the proximal convoluted tubule.

22 / 90

22)

Identify the INCORRECT statement

a. Ejaculation results from smooth muscle contractions around the vas deferens and ductus epididymis.

b. Spermatids divide to give rise to spermatocytes.

c. The seminiferous epithelium consists of spermatogenic cells and Sertoli cells.

d. The ducts which form the rete testis connect the tubuli recti with the ductuli efferentes.

e. The epithelium that lines the rete testis is a simple cuboidal epithelium.

23 / 90

23)

The region of the kidney containing long loops of Henle is called the:

a. cortex

b. medulla

c. papillae

d. pelvis

e. calyx

24 / 90

24)

The region of glomerulus (renal corpuscle) where the urinary space drains into the proximal convoluted tubule is called the:

a. mesangium.

b. area cribosa.

c. urinary (tubular) pole

d. juxtaglomerular apparatus.

e. vascular pole.

25 / 90

25)

The glands most closely associated with hair follicles are:

a. eccrine sweat glands.

b. sebaceous glands.

c. submucosal glands.

d. lymphatic glands.

e. mammary glands.

26 / 90

26)

Which cells respond to aldosterone?

a. epithelial cells of distal tubules.

b. juxtaglomerular cells.

c. mesangial cells.

d. podocytes.

e. epithelial cells of Bowman's capsule.

27 / 90

27)

Regions of cortical parenchyma located between medullary pyramids (pyramids of Malpighii) rather than adjacent to the surface of the kidney are called:

a. medullary rays.

b. renal lobules.

c. calyces

d. columns of Bertin.

e. papillae

28 / 90

28)

Which cells repond to antiduretic hormone (ADH)?

a. epithelial cells of Bowman's capsule.

b. juxtaglomerular cells.

c. podocytes.

d. mesangial cells.

e. epithelial cells of collecting duct.

29 / 90

29)

Filtration slits are located between adjacent:

a. capillary endothelial cells.

b. podocyte foot processes

c. layers of the glomerular basement membrane.

d. capillary fenestrations.

e. mesangial cells.

30 / 90

30)

Which of the following typically includes dead cells with pyknotic nuclei?

a. arrector pili muscle.

b. sebaceous gland.

c. duct of sweat gland.

d. hair follicle.

e. secretory portion of sweat gland.

31 / 90

31)

Identify the INCORRECT statement

a. The excretory ducts of sweat gland are lined by a stratified squamous epithelium.

b. The epidermis of the thin skin has four stratum

c. Langerhans cells function in the immune system and can leave the epidermis after exposure to antigens.

d. The overall orientation of collagen fibers in the dermis will follow the 'lines of greatest tension'.

e. The renewal of the human epidermis through the mitotic activity of basal cells takes 3-4 weeks.

32 / 90

32)

In which layer of the epidermis do cells contain keratohyalin granules?

a. papillary dermis

b. pilosebaceous unit

c. hair follicle

d. stratum granulosum

e. hairy skin

33 / 90

33)

Identify the INCORRECT statement

a. Long nephron contains large renal corpuscle

b. The normal thickness the GBM is between 300 and 350 micrometers.

c. The afferent arteriole will branch to capillaries of the glomerulus.

d. Short nephron contains large renal corpuscle which is located near the medulla

e. The lamina rara externa of the GBM is attaching to the podocyte

34 / 90

34)

The projections of dermis upward, indenting the bottom of the epidermis, are called:

a. sweat gland ducts

b. dermal papillae

c. epidermal appendages

d. arrector pili muscle

e. Meissner's corpuscles

35 / 90

35)

Identify the INCORRECT statement(6)

a. Leydig cells are located outside the seminiferous tubule and they secrete testosterone.

b. Spermatids divide to give rise to spermatocytes.

c. There are two vaginalis layers, parietal and visceral.

d. Each testis contains about 500 to 1000 seminiferous tubules.

e. The tunica albuginea is composed of dense fibrous connective tissue.

36 / 90

36)

Which cell type is responsible for the pigmentation of the skin?

a. melanocyte

b. myoepithelial cell

c. keratinocyte

d. Langerhans cell

e. fibroblast

37 / 90

37)

The region of the kidney where artery, vein and ureter are attached is called the:

a. calyx.

b. cortex.

c. hilus.

d. medulla.

e. pelvis.

38 / 90

38)

Which of the following epithelial cells of the urinary tract are simple squamous, without apparent structural specialization?

a. transitional epithelium.

b. Bowman's capsule epithelium.

c. glomerular epithelium (podocytes).

d. collecting duct epithelium.

e. distal convoluted tubule epithelium.

39 / 90

39)

Identify the CORRECT statement(7)

a. The macula densa is formed by a specialized section of the epithelium lining the distal tubule as it contacts the glomerulus and its afferent and efferent arterioles.

b. The parietal layer of Bowman’s capsule contains mesangial cells.

c. Juxtaglomerular cells surrounding the afferent arteriole of the glomerulus release angiotensin II to increase glomerular filtration.

d. The incomplete basal lamina of the discontinuous glomerular capillaries facilitates the formation of the glomerular filtrate.

e. The glomerular filtration barrier is formed by the cells of the parietal layer of Bowman's capsule and the basal lamina of the glomerular capillaries.

40 / 90

40)

Identify the INCORRECT statement

a. Primordial ovarian follicles are characterized by a single layer of flattened follicular cells which surround the oocyte.

b. Growth of the mammary gland is initiated by oestrogen and progesterone produced in the ovaries and placenta.

c. Like sweat glands, mammary glands are simple tubular glands.

d. The formation of new oocytes stops before birth.

e. The mammary gland is a merocrine and apocrine secretion.

41 / 90

41)

Identify the INCORRECT statement

a. Leydig cells provide structural and nutritional support for the developing spermatocytes.

b. The maturation of spermatids into spermatozoides is called spermiogenesis.

c. The first meiotic division of primary spermatocytes will give rise the secondary spermatocytes.

d. The prophase of primary spermatocytes is extremely prolonged.

e. The testes are surrounded by a thick connective tissue capsule, the tunica albuginea.

42 / 90

42)

Which of the following is CORRECT regarding the epidermis?

a. The main cell of the epidermis is the polyhedral cell.

b. There are six layers to the epidermis.

c. The epidermis is defined as a stratified squamous epithelium.

d. The stratum basale is secured to the basement membrane by zonula adherens.

e. The stratum basale consist of non-dividing keratinocytes.

43 / 90

43)

Identify the CORRECT statement(2)

a. Transitional epithelium lining the tubules of the nephron allows the tubules to expand if large amounts of primary urine are formed.

b. Juxtaglomerular cells surrounding the afferent arteriole of the glomerulus release angiotensin II to increase glomerular filtration.

c. The glomerular filtration barrier is formed by the cells of the parietal layer of Bowman's capsule and the basal lamina of the glomerular capillaries.

d. The macula densa is formed by a specialized section of the epithelium lining the distal tubule as it contacts the glomerulus and its afferent and efferent arterioles.

e. Collecting ducts are not permeable to water in the presence of antidiuretic hormone.

44 / 90

44)

The normal thickness of the glomerular basement membrane (the GBM) is between:

a. 300 and 350 micrometers.

b. 30 and 35 nanometers.

c. 0.3 and 0.35 micrometers.

d. 3 and 3.5 micrometers.

e. 30 and 35 micrometers.

45 / 90

45)

Which cell type is not normally found in the epidermis?

a. Merkel cells.

b. melanocytes

c. fibroblasts

d. keratinocytes (or "prickle cells").

e. Langerhans cells.

46 / 90

46)

The loose, adipose connective tissue layer of skin is:

a. hypodermis

b. mucosa

c. dermis

d. lamina propria

e. epidermis

47 / 90

47)

Identify the INCORRECT statement

a. Merocrine sweat glands, sebaceous glands and hair together form a pilosebaceous unit.

b. Merocrine and apocrine sweat glands are simple tubular coiled glands.

c. Sebaceous gland is a simple branched alveolar gland.

d. The renewal of the human epidermis through the mitotic activity of basal cells takes 3-4 weeks.

e. . Langerhans cells function in the immune system and can leave the epidermis after exposure to antigens.

48 / 90

48)

Which of the following is NOT an “epidermal appendage” (i.e., NOT comprised of epithelial tissue)?

a. hair follicle.

b. secretory portion of sweat gland.

c. arrector pili muscle.

d. sebaceous gland.

e. duct of sweat gland.

49 / 90

49)

Which cell type of the epidermis is involved in the mediation of immune responses?

a. Merkel cell

b. keratinocyte

c. myoepithelial cell

d. Langerhans cell

e. melanocyte

50 / 90

50)

Which connective tissue layer lies closest to the epidermis:

a. reticular layer of dermis.

b. stratum corneum

c. hypodermis

d. lamina propria

e. papillary layer of dermis.

51 / 90

51)

The outer lining of Bowman’s capsule (the parietal epithelilum) consists of a single layer of:

a. mesangial cells.

b. podocytes

c. squamous cells.

d. cuboidal cells.

e. pericytes

52 / 90

52)

Interstitial cells within the renal glomerulus, whose functions are uncertain but may include phagocytosis and maintenance of the glomerular basement membrane, are the:

a. podocytes.

b. transitional epithelium.

c. juxtaglomerular cells.

d. macula densa.

e. mesangial cells.

53 / 90

53)

Identify the INCORRECT statement(1)

a. The transport of sodium ions over the epithelia lining the ascending thin and straight distal tubules creates the osmotic gradient necessary for the resorption of water from the urine passing through the collecting ducts.

b. The glomerular filtration slit is around 20 to 30 nm.

c. The osmotic absorption of water by the proximal tubule cells reduces the volume of the primary urine by about 75%.

d. The glomerular filtration barrier is formed by the cells of the parietal layer of Bowman's capsule and the basal lamina of the glomerular capillaries.

e. Podocytes form the visceral layer of Bowman's capsule.

54 / 90

54)

Identify the INCORRECT statement.

a. After ovulation, thecal cells and granulosa cells form the corpus luteum.

b. The term "atresia" refers to the degeneration of follicles during development and adult life.

c. Hormone production of the corpus luteum stops after the implantation of the embryo.

d. Growth of the mammary gland is initiated by oestrogen and progesterone produced in the ovaries and placenta.

e. The epithelium that lines the ductuli efferntes is ciliated pseudostratified columnar epithelium.

55 / 90

55)

Which epithelial cells of the urinary tract are specialized with an apical brush border of microvilli?

a. distal convoluted tubule epithelium.

b. epithelium lining the thin segment of the loop of Henle.

c. collecting duct epithelium.

d. Bowman's capsule epithelium.

e. proximal convoluted tubule epithelium.

56 / 90

56)

Identify the INCORRECT statement

a. Growth of the mammary gland is initiated by oestrogen and progesterone produced in the ovaries and placenta.

b. The myometrium of the uterus is important for the transport of the oocyte and sperm.

c. The mammary glands are modified glands of the skin.

d. The mammary gland contains 15 to 20 lobes.

e. The basalis of the endometrium regenerates the functionalis after menstruation.

57 / 90

57)

The region of glomerulus (renal corpuscle) where the capillary tuft is attached is called the:

a. urinary (tubular) pole.

b. vascular pole.

c. juxtaglomerular apparatus.

d. mesangium

e. area cribosa.

58 / 90

58)

Which of the following layers lies nearest the outer surface of the epidermis?

a. stratum granulosum

b. stratum corneum.

c. stratum basale or stratum germinativum.

d. stratum lucidum.

e. stratum spinosum or stratum Malpighii.

59 / 90

59)

Identify the INCORRECT statement

a. Transitional epithelium lines the ureter.

b. Podocytes form the visceral layer of Bowman's capsule.

c. The increase in the surface area of proximal tubule cells by numerous long microvilli facilitates the absorption of nutritionally valuable substances from the primary urine.

d. Stratified squamous epithelium lines the distal part of the male and female urethra.

e. The principal function of the thin tubule of the nephron is the resorption of nutritionally valuable substances from the primary urine.

60 / 90

60)

Which structures are present in “thick skin” (i.e., palmar and plantar skin)?

a. arrector pili.

b. apocrine sweat glands.

c. hair follicles.

d. sebaceous glands.

e. sweat glands.

61 / 90

61)

Identify the INCORRECT statement

a. Testosterone produced by the male accessory reproductive glands (seminal vesicle and prostate) causes the development of the masculine extragenital sex characteristics.

b. The epithelium of the tubuli recti is pseudostratified columnar.

c. The seminiferous epithelium consists of spermatogenic cells and Sertoli cells.

d. Processes of Sertoli cells form the blood-testis barrier.

e. The prophase of primary spermatocytes is extremely prolonged.

62 / 90

62)

The fibrous connective tissue layer of skin is:

a. lamina propria

b. mucosa

c. epidermis

d. dermis

e. hypodermis

63 / 90

63)

The region of the kidney containing proximal convoluted tubules is called the:

a. pelvis

b. calyx

c. cortex

d. medulla

e. papillae

64 / 90

64)

Identify the INCORRECT statement(2)

a. The wall of the vagina consists of a mucosa, muscularis mucosae, submucosa, muscularis and adventitia.

b. The mammary glands are modified glands of the skin.

c. Sensory stimulation of the nipple initiates the milk ejection reflex via the secretion of oxytocin from the neurohypophysis.

d. The formation of new oocytes stops before birth.

e. The vagina is lined by stratified squamous epithelium.

65 / 90

65)

Identify the INCORRECT statement

a. The increase in the surface area of proximal tubule cells by numerous long microvilli facilitates the absorption of nutritionally valuable substances from the primary urine.

b. Juxtaglomerular cells surrounding the afferent arteriole of the glomerulus release angiotensin II to increase glomerular filtration.

c. The parietal layer of Bowman’s capsule in a simple squamous epithelium.

d. The osmotic absorption of water by the proximal tubule cells reduces the volume of the primary urine by about 75%.

e. The filtration slit membrane between the pedicels of podocytes is part of the glomerular filtration barrier.

66 / 90

66)

Arrector pili muscle consist of:

a. smooth muscle.

b. lymphocytes

c. columnar epithelium.

d. glandular epithelium.

e. squamous epithelium.

67 / 90

67)

Juxtaglomerular cells secrete:

a. angiotensinogen.

b. aldosterone.

c. antiduretic hormone.

d. renin.

e. urea.

68 / 90

68)

The tissue composition of hair follicles is most similar to:

a. sweat gland.

b. papillary layer of dermis.

c. hypodermis

d. epidermis

e. reticular layer of dermis.

69 / 90

69)

The capsule of the kidney consists of:

a. dense fibrous connective tissue.

b. transitional epithelium.

c. loose cellular connective tissue with many lymphocytes.

d. adipose connective tissue.

e. endothelium.

70 / 90

70)

The region of the kidney containing larger collecting ducts is called the:

a. calyx

b. pelvis

c. cortex

d. papilla

e. medulla

71 / 90

71)

Identify the CORRECT statement

a. The Sertoli cells are located outside the seminiferous tubule.

b. Spermatocytes are stored in the terminal part of the seminal vesicles.

c. Differences in the height of the epithelium give the lumen of the ductuli efferentes an irregular outline.

d. The rete testis is lined by stratified squamous epithelium.

e. Spermatocytes which leave the testis are structurally mature and motile.

72 / 90

72)

Identify the CORRECT statement(1)

a. Stratified squamous epithelium lines the distal part of the male and female urethra.

b. The glomerular filtration barrier is formed by the cells of the parietal layer of Bowman's capsule and the basal lamina of the glomerular capillaries.

c. The principal function of the thin tubule of the nephron is the resorption of nutritionally valuable substances from the primary urine.

d. The incomplete basal lamina of the discontinuous glomerular capillaries facilitates the formation of the glomerular filtrate.

e. Podocytes form the parietal layer of Bowman’s capsule.

73 / 90

73)

Identify the CORRECT statement

a. By the first meiotic division B-spermatogonia give rise to primary spermatocytes.

b. The outer part of the seminiferous epithelium is formed by 3-4 layers of smooth muscle.

c. The testes are surrounded by a thick connective tissue capsule, the tunica albuginea.

d. The Sertoli cells are located outside the seminiferous tubule.

e. Testosterone produced by the male accessory reproductive glands (seminal vesicle and prostate) causes the development of the masculine extragenital sex characteristics.

74 / 90

74)

Which segment of the nephron functions to filter fluid from blood into urinary space?

a. proximal convoluted tubule.

b. glomerulus.

c. collecting duct.

d. distal convoluted tubule.

e. loop of Henle.

75 / 90

75)

Identify the INCORRECT statement

a. The functionalis of the endometrium of uterus and cervix is shed during menstruation.

b. The acini of the secretory part of the mammary gland are formed during pregnancy.

c. Primordial ovarian follicles are characterized by a single layer of flattened follicular cells which surround the oocyte.

d. The mammary glands are modified glands of the skin.

e. Sensory stimulation of the nipple initiates the milk ejection reflex via the secretion of oxytocin from the neurohypophysis.

76 / 90

76)

Vessels which connect interlobular arteries with glomerular capillaries are called:

a. vasa recta.

b. peritubular capillaries.

c. efferent arterioles.

d. arcuate arteries.

e. afferent arterioles.

77 / 90

77)

Identify the CORRECT statement

a. The renal lobule contains many renal lobes.

b. The protein albumin is normally filtrated in the glomerulus.

c. The capillaries of the glomerulus are continuous type.

d. Short nephron contains small renal corpuscle located near the renal capsule.

e. The lamina rara interna of the GBM is attaching to the podocyte.

78 / 90

78)

Identify the CORRECT statement(4)

a. The outer layer of renal capsule contains many myofibroblasts.

b. Stratified squamous epithelium lines the distal part of the male and female urethra.

c. Transitional epithelium lining the tubules of the nephron allows the tubules to expand if large amounts of primary urine are formed.

d. The incomplete basal lamina of the discontinuous glomerular capillaries facilitates the formation of the glomerular filtrate.

e. The pyramid of Malpighi is in the renal cortex

79 / 90

79)

Which of the following is CORRECT regarding the stratum basale?

a. The main cell type of the stratum basale is the melanocyte.

b. Merkel cells are involved in immune responses.

c. Melanocytes store melanin, which is synthesized by keratinocytes.

d. The stratum basale consists of non-dividing keratinocytes.

e. Forms the base layer of the epidermis.

80 / 90

80)

The region of the kidney containing glomeruli is called the:

a. calyx.

b. pelvis.

c. cortex

d. papillae.

e. medulla.

81 / 90

81)

Which layer of the epidermis is responsible for the barrier function of the epidermis?

a. stratum granulosum

b. stratum basale

c. stratum corneum

d. thin skin

e. stratum spinosum

82 / 90

82)

Identify the INCORRECT statement

a. Primordial ovarian follicles are characterized by a single layer of flattened follicular cells which surround the oocyte.

b. A fluid filled hollow, the antrum, is a characteristic feature of primary ovarian follicles.

c. After ovulation, thecal cells and granulosa cells form the corpus luteum.

d. Ovarian surface is lined by simple cuboidal epithelium

e. The term "atresia" refers to the degeneration of follicles during development and adult life.

83 / 90

83)

Identify the INCORRECT statement

a. The filtration slit membrane between the pedicles of podocytes is part of the glomerular filtration barrier.

b. Stratified squamous epithelium lines the distal part of the male and female urethra.

c. The macula densa cells are found in the distal tubule faced to the vascular pole.

d. An inner layer of circular smooth muscle and an outer layer of longitudinal smooth muscle are found in both the ureter and bladder.

e. Renin is released by juxtaglomerular cells which surround the afferent arteriole of the glomerulus.

84 / 90

84)

Which of the following is CORRECT regarding the stratum spinosum?

a. Merkel cells are the outermost sentinels of the cellular immune system.

b. The cells of the stratum spinosum are flat without nuclei.

c. Langerhans cells are found mostly in the stratum corneum.

d. The stratum spinosum sits between the stratum corneum and the stratum granulosum.

e. The stratum spinosum is formed from daughter cells of the basal layer.

85 / 90

85)

Identify the CORRECT statement

a. Ejaculation results from smooth muscle contractions around the vas deferens and ductus epididymis.

b. Spermatocytes which leave the testis are structurally mature and motile.

c. Leydig cells provide structural and nutritional support for the developing spermatocytes.

d. Leydig cells are located inside the seminiferous tubule.

e. The outer part of the seminiferous epithelium is formed by 3-4 layers of smooth muscle.

86 / 90

86)

Identify the CORRECT statement

a. The excretory ducts of sweat gland are lined by a stratified squamous epithelium.

b. The papillary layer of the dermis contains fine collagen and elastic fibers and the capillary network which supplies the epidermis.

c. The secretory ducts of sweat gland are lined by a stratified squamous epithelium.

d. The synthesis of melanin by basal cells is under hormonal control.

e. Merocrine sweat glands, sebaceous glands and hair together form a pilosebaceous unit.

87 / 90

87)

Identify the CORRECT statement

a. Like sweat glands, mammary glands are simple tubular glands.

b. The functionalis of the endometrium of uterus and cervix is shed during menstruation.

c. A distinct zona pelucida separates the oocyte and follicular cells of primordial ovarian follicles.

d. Complex mucosal folds give the lumen of the ampulla of the oviduct a very irregular outline.

e. Collecting ducts are not permeable to water in the presence of antidiuretic hormone (ADH).

88 / 90

88)

The epithelial layer of skin is:

a. dermis

b. lamina propria

c. mucosa

d. epidermis

e. hypodermis

89 / 90

89)

The region of the kidney containing distal convoluted tubules is called the:

a. pelvis

b. capsule

c. medulla

d. hilus

e. cortex

90 / 90

90)

In which layer of the epidermis are cells mitotically active?

a. stratum basale

b. stratum lucidum

c. thick skin

d. stratum granulosum

e. stratum corneum

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និស្សិតអាចប្រាប់មកកាន់ពួកយើងបានដើម្បីកែកំហុស ឬអំពីបញ្ហាដោយអចេតនាណាមួយដែលកើតមានកំឡុងពេលធ្វើតេស្ត