Male reproductive system Flashcards Preview

Vet Microanatomy 1 > Male reproductive system > Flashcards

Flashcards in Male reproductive system Deck (47):
1

main components of male repro system

testis
epididymis
ductus deferens
accesory glands
external genitalia

2

functions of male repro

-production of male sex cells
-production of testosterone
-nitroductino of male gametes to female repro
-production of PMDH/AMH in may embryo and inhibin in adults

3

testis are site of what and production of what hormone

-spermatogenesis and testosterone

4

testis are surrounded by, while the inner layer is made up of what with what

-tunica albuginea and tunicae vaginalis
-seminiferous tubules with sertoli cells

5

interstitium of testis contains what

interstitial cells/leydig cells

6

tunica vaginalis is composed of
-has how many layers?

mesothelium and connective tissue
-two layers:parietal and visceral

7

tunica albuginea is a capsule of...

dense connective tissue composed of collagen fibers, elastic fibers, and myofibroblasts

8

tunica albuginea is continuous with...

connective tissue called septule testis that separates seminiferous tubules

9

what type of cells are found between seminiferous tubles?

interstitial/leydig cells

10

what are seminiferous tubles composed of?

spermatogenic epithelium

11

spermatogenic epithelium is surrounded by

lamina propriaof collagen and elastic fibers

12

spermatogonia type A

spermatocytes (primary, then secondary), spermatids, mature spermatozoa/sperm

13

myoid cells at seminiferous tubules function to

move spermatozoa out of tubles
-located outside basement membrane of each tubule

14

spermatic pathway:

-seminiferous tubles->tubuli recti->rete testis->efferent ductules->epididymal duct->ductus vasdeferens->pelvic urethra->penile urethra

15

sertoli cells characterized by

-in contact with each other
-presence of tight junctions dividing the seminiferous epithelium into basal and adluminal compartments

16

spermatogonia reside in [blank] compartment, while spermatocytes pass through barrier made by sertoli cells into which barrier

-basal compartment
-adluminal compartment

17

sertoli cell function

-support, protect, nourish spermatogenic cells
-secrete supporting testicular fluid
-protect spermatids from immune system via tight junctions (blood testis barrier)

18

sertoli cells have receptors for..

-receptors for FSH, resulting in release of androgen binding hormone (ABP)
-abp binds androgen, which influences germ cell differentiation

19

sertoli cells synthesize...

anti-mullerian hormone (AMH) in embryo to prevent formation of mullerian duct and oviduct

20

sertoli cells release

inhibin, which supresses secretion of FSH
-therefore has negative feedback on FSH

21

interstitial leydig cells

-occur in clusters between seminiferous tubules
-nucleus is small, euchromatic, eccentric
-cytoplasm is acidophilic/eosiniphilic
-secrete TESTOSTERONE
-controlled by interstitial cells stimulating hormone (ICSH)

22

testosterone
-produced by
-high conc. necessary for
-responsible for
-other effects include

-produced by leydig cells
-high concentration necessary for spermatogenesis
-responsible for secondary male sex cahracteristics and for libido
-other androgenic effects: stimulates development and secretory activity of sex male accessory glands
-anabolic effect to stimulate growth of skeletal muscles and bones

23

The spermatic cord, the vascular supply of the testis, is composed of

testicular artery, testicular vein, lymphatics, ductus deferens

24

countercurrent heat exchange system occurs between

testicular artery and vein to keep the testis cool by moving heat from the arterial blood to the venous blood

25

seminiferous tubules terminate as [blank] that empty into anastomising channels of the [blank]

-straight testicular tubules
-rete testis

26

rete testis is line by

simple squamous to cuboidal epithelium

27

rete testis empties into [blank] which lead to [blank]

-efferent ductules, which lead to the epididymal duct

28

epididymis has three parts:

head, body, and tail

29

epididymal duct
-lined by
-main function
-site of...

-can be very long
-pseudostratified columnar epithelium with stereocilia
-function is fluid resorption (90%) and secretion of glycerophosphocholine
-site of sperm storage, at the tail of epididymis

30

ductus deferens
-lined by
-characterized by
-terminal portion of...

-lined by pseudostratified columnar epithelium with stereocilia
-characterized by prominent muscularis, which propels spermatozoa
-terminal portion is the ejaculatory duct

31

in ruminants, near the junction with the urethra the ductus deferens forms a male accessory glands known as...

ampulla

32

list the accessory sex glands for male repro

-bulbourethral glands
-prostate gland
-ampullary glands
-vesicular glands/seminal vescile

33

accessory sex glands functions

-nutrition via fructose
-acid buffer
-sperm movement

34

accessory glands lined by...

simple or pseudostratified epithelium

35

all accessory glands are

tubuloalveolar

36

seminal vesicles function

-produce fructose, a source of energy for sperm cells

37

-seminal vesicles not present in

cats and dogs

38

equine vesicular glands have

true vesicular features with branching tubulo-alveolar glands that empty into central ducts

39

Prostate

-surrounded by fibroelastic capsule
-lined by simple cuboidal to columnar, sometimes pseudostrat
-branched tubuloalveolar gland
-corpora amylacea/prostate concretions seen in lumen and increase with age
-secretes protein

40

bulbourethral glands

-empty into pelvic urethra
-lined by tall simple cuboidal/columnar epithelium
-mucous secretion acts as lubricant in urethra

41

corpora cavernosa

paired masses of erectile tissue

42

corpus spongiosum

-single mass of erectile tissue surrounds the urethra, more deicate than corpus cavernosa

43

sigmoid flexure

-bend of inner-penis of bull repro tract
-caused by retractor penis muscle

44

male urethra has 3 portions

-prostatic, pelvic, and penile

45

most of the urethra length is what type of epithelium

transitional epithelium

46

male urethra made up of

corpus spongiosum

47

urethra possesses what part of what gland

-disseminate part of prostate gland