Ansc 107 Part 13- Male Reproductive System

Front 1

3 functions of the male

Back 1

produce/maintain sperm. detect females in estrus. inseminate females and fertilize female gamete

Front 2

spermatic cord

Back 2

contains vas deferens, pampiniform plexus, and external cremaster muscle nerves

Front 3

ves deferens

Back 3

transport sperm during ejaculation

Front 4

seminiferous tubule

Back 4

sperm producing cells- true germinal epithelium

Front 5

tinica albuginea

Back 5

connective tissue which holds testis together

Front 6

rete testis

Back 6

network of tiny ducts, function in sperm transport

Front 7

efferent ductules

Back 7

6-12 tubules absorb fluid

Front 8

caput (head) epididymis

Back 8

sperm enter into head after being produced in seminiferous tubules. contribute to maturation of sperm and fluid absorption

Front 9

corpus (body) epididymis

Back 9

maturation of sperm. "finishing shop" in head and body. sperm undergo changes to allow them to become fertile. happens gradually over multiple days

Front 10

cauda (tail) epididymis

Back 10

final maturation and storage, only sperm capable of fertilization

Front 11

sertoli cells support ____________

Back 11

spermatogenesis

Front 12

leydig cells synthesize _________

Back 12

testosterone

Front 13

testis need to be ___ deg C less than body temperature for spermatogenesis to occur

Back 13

3-5

Front 14

scrotal properties facilitate ____________

Back 14

thermoregulation

Front 15

4 ways the scrotum regulates temperature

Back 15

location of testis away from the core of the body, low insulation, sweat gland, and the tunica dartos muscle

Front 16

2 ways the blood supply regulates testis temperature

Back 16

pampiniform plexus (counter-current heat exchange), and convoluted testicular artery on surface of testes (blood drops 4 deg C before entering testis)

Front 17

cryptorchidism

Back 17

lack of testis descent into scrotum and thus thermoregulation is absent

Front 18

bilateral cryptorchidism

Back 18

is sterile. (affects both testis). no spermatogenesis, but testosterone is produced

Front 19

unilateral cryptorchidism

Back 19

is fertile, but reduced sperm producing capability

Front 20

only _____% sperm produced make it to the cauda epididymis

Back 20

50-70%

Front 21

3 things that happen to unejaculated sperm

Back 21

reabsorbed by excurrent duct system, lost in urine, masturbation loss of sperm

Front 22

_____________ have biggest genitals for body size

Back 22

rams and goats

Front 23

horses don't have a _____________

Back 23

sygmoid fletcher (S shape)

Front 24

if species has a sygmoid fletcher, _____________- semi-rigid

Back 24

fibro-elastic state

Front 25

it takes cattle ______ to ejaculate

Back 25

1-3 seconds

Front 26

it takes pigs ________ to ejaculate

Back 26

20-30 minutes

Front 27

____ have the largest litter sizes

Back 27

pigs

Front 28

___________ provides site for maturation and storage of sperm

Back 28

epididymis

Front 29

accessory sex gland provide _______________

Back 29

seminal plasma

Front 30

penis is _________

Back 30

copulatory organ