Male Anatomy Vocab

Question 1

__cells produce testosterone

Answer 1

Leydig cells of the testes

Question 2

testosterone only acts when its converted to ___ by ___ enzyme

Answer 2

converted to 5a DHT by 5a reductase

Question 3

__ muscle contracts scrotum to wrinkle it. When relaxed scrotum is mooth

Answer 3

dartos muscle

Question 4

__ muscle controls position of scrotum and testes

Answer 4

cremaster muscle

Question 5

testes are covered by __

Answer 5

tnica albuginea acts like the cortex of the testes

Question 6

there are about __ lobules per teste

Answer 6

250

Question 7

each lobule has ___

Answer 7

about 1-4 seminiferous tubules that converge to form a single straight tubule, which leads into rete testis

Question 8

rete testis is__

Answer 8

short efferent duct that exits the testes to the epididymis

Question 9

__ is where sperm complete their maturity

Answer 9

epididymis

Question 10

what happens to spermatogonium in a seminiferous tubule?

Answer 10

spermatogonium - primary spermatocyte - secondary spermatocyte - spermatid - sperm - into the seminiferous tubule

Question 11

ductus deferens aka

Answer 11

vas deferens

Question 12

how does vas deferens travel?

Answer 12

continuous with epididymis
enters abdominopelvic cavity through the inguinal canal and passes along the lateral pelvic wall behind bladder and toward the prostate gland

Question 13

what are the 3 regions of the urethra in male?

Answer 13

prostatic urethra, membranous urethra, and penile urethra

Question 14

2 other names for penile urethra?

Answer 14

cavernous urethra or spongy urethra

Question 15

3 types of accessory glands in males

Answer 15

seminal vesicles, prostate gland, and bulbourethral glands

create fluids that enter the urethra

Question 16

when sperm count is under ____ get fertility problems

Answer 16

less than 10-20 million per mL

Question 17

3 columns of penis etc..

Answer 17

2 dorsal columns = corpora cavernosa

1 ventral column = corpus spongiosum

Question 18

root of the penis attaches to __

Answer 18

the pubic arch

Question 19

erection leads to increase in what 3 things

Answer 19

penus length, wideness and firmness

Question 20

for males FSH does what?

Answer 20

from the ant. pit. and stimulates spermatogenesis

Question 21

for males LH does what?

Answer 21

stimulates the production of testosterone

Question 22

what is another name for LH

Answer 22

ICSH: interstitial cell stimulating hormone

Question 23

spermatogonia and primary spermatocytes have ___

Answer 23

46 chromosomes XY because made by mitosis

Question 24

after ___ sperm are finally mature

Answer 24

2 rounds of meiosis now a haploid

Question 25

acrosome

Answer 25

contains enzyme to help sperm penetrate egg

Question 26

midpiece of sperm has..

Answer 26

mitochondria for ATP production

Question 27

tail portion

Answer 27

flagellum for sperm locomotion

Question 28

sperm can live __ hrs within female body

Answer 28

48 hours

Question 29

from primary spermatocyte to maturity takes ___

Answer 29

74 days

Question 30

after vasectomy male is infertile after __ days

Answer 30

30 days