Histology - Male

Question 1

testis is surround by? which is also surrounded by?

Answer 1

Tunica albuginea (CT)
tunica vaginalis

Question 2

septa from tunica albuginea divides testis into?

Answer 2

250 incomplete compartments/lobule

Question 3

how are the seminiferous tubules within testis connected in different compartments?

Answer 3

via rete testis»efferent ductules» epididymis»vas deferens»urethra

Question 4

each lobule has how many seminiferous tubules? length?

Answer 4

1-4 convoluted (50cm)

Question 5

Tunica propria in seminiferous tubules lacks? contains instead?

Answer 5

lacks fibroblasts

contains smooth muscles

Question 6

what cells are within the tunica propria of seminiferous tubules? purpose?

Answer 6

Leydig Cells for testosterone production

Question 7

seminiferous tubules has what kind of epithelium?

Answer 7

stratified epithelium full of stem cell spermatogonium

Question 8

where are sertoli cells?

Answer 8

support cells that are between and inter-digitating between the spermatogonium developing

Question 9

what is located at base of seminiferous tubules stratified epithelium? purpose?

Answer 9

peritubular (myoid) cells of the tunica propria. peristaltic movement to move sperm

Question 10

when are Leydig cells active?

Answer 10

first 5 months of life

inactive until puberty

Question 11

what does the tubuli recti connect?

Answer 11

the seminiferous tubules to the rete testis

Question 12

what is tubuli recti contain? cell type?

Answer 12

only sertoli cells (simple ciliated cuboidal)

Question 13

dustus deferens embryonic origins? female equivalent?

Answer 13

mesonephric Wolffian duct

females forms fallopian tubes

Question 14

around 20 surviving mesonephric tubles form what? what does it connect?

Answer 14

efferent ductules that connect the rete testis to the single epididymis

Question 15

what are efferent ductules lined with? surrounded by?

Answer 15

ciliated pseudostratified columnar epithelium surrounded by smooth muscle

Question 16

3 main functions of epididymis?

Answer 16

1. mature sperm
2. decapacitation (ihibitory factors secreted)
3. absorb testicular fluid/debris cleaning

Question 17

ductus deferens runs into abdo via?

Answer 17

inguinal canal/spermatic cord

Question 18

ductus deferens enters prostate and becomes?

Answer 18

ejaculatory duct

Question 19

ductus deferens lined with

Answer 19

ciliated pseudostratified columnar epithelium

Question 20

ductus deferens muscular?

Answer 20

yes thick smooth muscle coat

Question 21

ejaculatory duct muscular?

Answer 21

Nope

Question 22

seminal vesicles secrete:

Answer 22

fructose
prostaglandins
alkaline fluid

Question 23

how much of semen from seminal vesicles?

Answer 23

50% volume

Question 24

prostate how many glands?

Answer 24

30-50 tubuloalveolar glands into urethra and prostatic sinuses

Question 25

describe urethra in prostate?

Answer 25

branching prostatic sinuses

Question 26

3 glands in prostate:

Answer 26

1. main glands drain via long ducts 2. submucosal drain into prostatic sinuese 3. tiny mucosal glands open into urethra

Question 27

4 zones of prostate:

Answer 27

1. central -surround ejaculatory 2. peripheral - surround central 3. transitional -surrounds urethra and periurethral zone 4. Periurethral zone - adjacent to urethra

Question 28

describe prostatic epithelium

Answer 28

heterogenous: columnar, cuboidal, psudostratified

Question 29

describe the septa in the prostate

Answer 29

CT containing abundant smooth muscle

Question 30

what are prostatic concretions?

Answer 30

normal with aging: accumulation of protein, calcium phosphase, cholesterol and debris

Question 31

prostate adds what to semen?

Answer 31

1. acid phosphatase 2. fibrolysin (frees sperm once in cervix) 3. coagulating factors (cause ejaculate to clot to help stay in vagina)

Question 32

three masses of cavernus tissue in penis surrounded by 3 things?

Answer 32

1. smooth muscle 2. CT 3. tunica albuginea (elastic capsule)

Question 33

parasympathetic stim of penis does what? which Neurotransmitters?

Answer 33

relaxes cavernosal smooth muscle and dilates arteries (via ACh and NO

Question 34

how does blood stay in erect penis?

Answer 34

cavernous bodies compress veins to restrict it

Question 35

what is detumescence? how activated?

Answer 35

sympathetic stim restric inflow and contract cavernosal smooth muscle to empty blood

Question 36

body of clitoris contains?

Answer 36

bilateral cavernous tissue again surrounded by tunica albuginea

Question 37

where is crus of clitoris

Answer 37

extends inferiorly along pelvis

Question 38

blubs of clitoris function?

Answer 38

unknown, no male homologue