Male anatomy

Question 1

mediastinum

Answer 1

connective tissue(collecting ducts/rete testis)

Question 2

2 parts of parenchyma

Answer 2

Tubular compartment
-seminiferous tubules
-sertoli(nurse) cells

Interstitial compartment
-leydig cells
-blood vessels
-lymphatic
-connective tissue

Question 3

what is produced by Leydig cells

Answer 3

testosterone

Question 4

major layers of scrotum (internal to external)

Answer 4

parietal/visceral tunica vaginalis
scrotal fascia
tunica dartos
scrotal skin

Question 5

scrotum effect on thermoregulation

Answer 5

sweat and sebaceous glands

Question 6

tunica dartos

Answer 6

smooth muscle
changes testus surface area
long term

Question 7

cremaster muscle

Answer 7

skeletal muscle
raises and lowers testis
short term

Question 8

pampiniform plexus

Answer 8

heat exchange, warm blood flows past cool blood

Question 9

thermosensitive neurons

Answer 9

detect heat/cold and signal brain to react

Question 10

segments of epididymis and their function

Answer 10

head(caput)-fluid reabsorption
body(corpus)-maturation of sperm
tail(cauda)-storage of mature sperm

Question 11

types of testis

Answer 11

pendulous(bull, ram)
non pendulous(horse, boar)

Question 12

types of penis

Answer 12

vascular(horse)
fibroelastic(boar, cow)

Question 13

sigmoid flexure

Answer 13

in fibroelastic penis, allows it to be held in sheath until used

Question 14

what causes the sigmoid flexure to contract and relax

Answer 14

retractor penis muscle

Question 15

corpus cavernosum

Answer 15

-main part of penile shaft
-spongy erectile tissue fills with blood when erect
-smooth muscle

Question 16

corpus spungiosum

Answer 16

-surrounds urethra
-protects urethra from being crushed when corpus cavernosa fills

Question 17

accessory sex glands

Answer 17

vesicular glands(seminal vesicles)
prostate
bulbourethral(cowper’s) gland
ampulla

Question 18

what accessory sex gland do boars not have

Answer 18

ampulla

Question 19

T/F leydig cells are located inside the seminiferous tubules

Answer 19

FALSE

Question 20

Leydig cells
-Location
-production

Answer 20

-located in the interstitial compartment
-produce testosterone

Question 21

Sertoli(nurse) cells
-Location
-purpose

Answer 21

-located in tubular compartment
-support growth of sperm cells
-create blood testis barrier

Question 22

importance of blood testes barrier

Answer 22

prevent blood and immune cells from entering seminiferous tubules and killing sperm