EX3 Histology - Male Reproductive System Flashcards Preview

SP14 Anatomy > EX3 Histology - Male Reproductive System > Flashcards

Flashcards in EX3 Histology - Male Reproductive System Deck (41):
1

What are the main components of the male reproductive system

testes
passageways
accessory glands (seminal vesicles, etc.)
penis

2

What is the endocrine and exocrine function of the testes

endocrine; produce testosterone and steroidogenesis
exocrine; production of spermatozoa

3

What are the steps of spermatogenesis

spermatocytogenesis
spermiogenesis

4

This is the formation of spermatogonia to spermatocytes to spermatids involving two steps

spermatocytogenesis

5

What are the two steps of spermatocytogenesis

spermatogonial phase; mitosis
spermatocyte phase; meiosis

6

This is the maturation phase; spermatids to spermatozoa

spermiogenesis

7

What is the main reason for the testes being located in the scrotum

scrotum is outside the body and therefore the temperature is lower; required for sperm production

8

What is the epithelial lining of the seminiferous tubules

complex stratified epithelium

9

What two cells are found in the seminiferous tubules

sertoli cells
spermatogenic cells

10

What is contained within the spermatogenic cells

spermatogonia
primary spermatocytes
secondary spermatocytes
spermatids

11

What type of spermatogonia are there

Type A dark
Type A pale
Type B

12

Type A dark spermatogonia are parallel to what type of cells

stem cells

13

Where do Type A pale spermatogonia come from and what is important about them

derived from Type A dark
undergoes mitosis, but does not fully divide, stays connected

14

Type B spermatogonia are derived from what and does what

derived from Type A pale
continues with mitosis; condenses the chromatin

15

Type B spermatogonia is the last sperm precursor to do what

undergo mitosis
from then on in production, it is strictly meiosis

16

What are the levels of chromatid/chromosomes in primary spermatocytes, secondary spermatocytes, and spermatids

primary spermatocytes; 2N, 4D
secondary spermatocytes; 1N, 2D
spermatids; 1N, 1D

17

How long does the entire spermatogenesis process last

2 months

18

Where does spermatogenesis (differentiation) occur

in the epididymis

19

What is the overall process of spermatogenesis

formation of acrosome
flattening of nucleus
reorganizing of mitochondria
lengthening of body
flagellum creation
loss of cytoplasm

20

These are short straight tubules; lined only with sertoli cells (triangle nucleus)

straight tubules

21

What type of epithelium lines the end of straight tubules

cubodial epithelium with underlying dense connective tissue

22

This is an interconnected network of channels lined with cubodial epithelium of which the cells have a single apical cilium and few, short, apical microvili

rete testis

23

This is lined with pseudo stratified columnar epithelium with groups of non ciliated cubodial cells with microbial alternating with groups of taller ciliated cells; some circularly orientated smooth muscles can be found

efferent ductules

24

This is a highly coiled excretory duct, 4-5 meters in length; storage and completion of maturation process occurs here

epididymis

25

What kind of epithelium lines the epididymis

pseudostratified columnar epithelium composed of rounded basal cells and columnar cells with stereo cilia; surrounded by smooth muscle cells

26

This is an long, straight excretory duct that is part of the spermatic cord with two main parts; the ampulla and ejaculatory duct

ductus (vas) deferens

27

What kind of epithelium lines the ductus deferens

pseudo stratified columnar epithelium with sparse stereo cilia
muscularis has 3 layers of smooth muscle
mucosa lies in longitidunal folds
narrow lumen

28

This is the dilated area of the ductus deferens where the epithelium is thicker and more folded

ampulla

29

This is the portion of the ductus deferens in the prostate gland; after the seminal vesicle joins; no muscular layer

ejaculatory duct

30

What are the the parts of the male urethra

prostatic
membranous
spongy (or penile)

31

These glands produce seminal fluid

seminal vesicles
prostate gland
bulbourethral (Cowper's) gland

32

These produce ~60% of seminal fluid; contains fructose

seminal vesicles

33

This gland activates the sperm; empties in to prostatic urethra

prostate

34

These glands produce alkaline mucous to help reduce pH and fight the acidic environment of the female

bulbourethral (Cowper's) glands

35

What kind of epithelium lines the seminal vesicles

simple columnar or pseudo stratified columnar rich in secretory granules
smooth muscle
thin folds in lumen

36

What kind of epithelium lines the prostate

30-50 tubuloaveolar glands embedded in fibromuscular stroma, covered by fibroelastic capsule
contains corpora amylacea or prostatic concretions

37

What kind of epithelium lines the bulbourethral glands

compound tubuloaveloar glands lined with mucous-secreting simple columnar epithelium

38

Where are the bulbourethral glands located

urogential diaphragm and empty into proximal part of the penile urethra

39

When does an erection occur

when the three cylinders of erective tissue fills with blood

40

What are the three cylinders of erective tissues

corpus cavernosa (2)
corpus spongiosum

41

What kind of epithelium lines the erective tissues

pseudostratified columnar
at the end - stratified squamous