Lecture 04/Lab 2: Male Repro Histology (Baekey)

Question 1

fx of septa in testis

Answer 1

divides testis into lobules; allows blood vessels to travel in the interstitial tissue

Question 2

seminiferous tubules house

Answer 2

developing germ cells

Question 3

leydig cells secrete what hormone?

Answer 3

testosterone

Question 4

interstitial/adventitial tissue contains 2 things

Answer 4

leydig cells, blood vessels

Question 5

what tissue surrounds rete testis?

Answer 5

mediastinum

Question 6

rete testis

Answer 6

network of randomly anastomized tubules in the mediastinum.

Question 7

epithelium lining rete testis

Answer 7

simple cuboidal epithelium

Question 8

Are spermatogonia and primary spermatocyte diploid or haploid?

Answer 8

diploid

Question 9

Are spermatids diploid or haploid?

Answer 9

haploid

Question 10

Sperm developmental stages (4)

Answer 10

1) spermatogonium
2) spermatocyte
3) early spermatid
4) late spermatid

Question 11

fx of sertoli cells

Answer 11

Provide proper microenvironment for developing sperm cells.

• Synthesize Mullerian inhibitory Factory (MIF)
• Form blood-testis barrier through tight junctions

Question 12

What structure is b/w seminiferous tubules and rete testis?

Answer 12

Straight tubules

Question 13

efferent ductules fx

Answer 13

connect rete tesis with epididymis

Question 14

Ductus epididymus fx

Answer 14

Mature/store sperm, absorb fluid and androgen binding protein

Question 15

Ductus deferens fx

Answer 15

transport sperm from the epididymis in anticipation of ejaculation

Question 16

epithelium of ductus epididymus

Answer 16

pseudostratified columnar epithelium

Question 17

defining characteristic of vas deferens histologically

Answer 17

thick tunica muscularis for transporting sperm

Question 18

Ampullary gland fx

Answer 18

Contributes to seminal fluid. Secretes glycogen and lipid. Located where ductus deferens enters the urethra

Question 19

epithelium of ampullary glands

Answer 19

columnar epithelium

Question 20

main fx of accessory glands

Answer 20

produce seminal fluid

Question 21

3 accessory glands

Answer 21

seminal vesicles, prostate, bulbourethral (Cowper’s), Ampulla in some species

Question 22

which glands empty into the ductus deferens?

Answer 22

ampullae and vesicular glands

Question 23

which glands empty into the urethra?

Answer 23

prostate and bulbourethral glands

Question 24

epithelium of seminal vesicles

Answer 24

pseudostratified columnar

Question 25

2 parts of prostate

Answer 25

body of prostate (wrapped around pelvic urethra), disseminate portion (embedded in lamina propria/submucosa of pelvic urethra)

Question 26

what does prostate gland secrete?

Answer 26

proteins and lipids

Question 27

what does bulbourethral gland secrete?

Answer 27

mucus and glycogen

Question 28

prostatic portion of urethra location

Answer 28

from bladder to prostate

Question 29

membranous portion of urethra location

Answer 29

from prostate to bulb of penis

Question 30

spongiose portion of urethra location

Answer 30

distal to bulb of penis

Question 31

epithelium of penis

Answer 31

stratified squamous epithelium

Question 32

corpora cavernosa

Answer 32

paired large bodies of erectile tissue located dorsal to the os penis

Question 33

os penis

Answer 33

bone between the urethra and corpora cavernosa

Question 34

corpus spongiosum

Answer 34

small medial body of erectile tissue surrounding the urethra

Question 35

retractor penis

Answer 35

bundle of smooth muscle ventral to the urethra and corpus spongiosum

Question 36

epithelium that lines urethra

Answer 36

transitional epithelium

Question 37

erection

Answer 37

relaxation of smooth muscle in the helicine arteries, leading to increased blood flow into cavernous tissue, compressing vein and reducing outflow

Question 38

fibroelastic vs. musculocavernous penis **

Answer 38

fibroelastic has less complex/vascular corpus cavernosum and no bulbospongiosus or retractor penis. Fibroelastic penis elongates but does not increase in diamter when erect

Question 39

Which species has fibroelastic penis?

Answer 39

bull

Question 40

Which species has musculocavernous penis?

Answer 40

stallion