Male Reproductive System

Question 1

male repro. system functions

Answer 1

-produce sperm
-testosterone
-deliver sperm to female

Question 2

spermatogenesis

Answer 2

sperm formation

Question 3

functions of testes/testicles

Answer 3

spermatogenesis and hormone production

Question 4

spermatogenesis occurs in

Answer 4

seminiferous tubules of testes under FSH influence

Question 5

what does testosterone do? (3)

Answer 5

-sperm production activation
-secondary sex characteristics
-increases muscle and bone development

Question 6

where are the hormones produced?

Answer 6

in interstitial cells of testes under LH influence from pituitary

Question 7

do males continuously produce sperm?

Answer 7

yes, large quantities produced and stored so they are always ready

Question 8

testes/testicles characteristics

Answer 8

-develop before birth in abdominal cavity
-descend into scrotum at or soon after birth
-oval shaped, size varies
-located outside abdomen

Question 9

cryptorchid

Answer 9

1 or both testicles undescended

Question 10

castration reasons

Answer 10

-don’t want them to impregnate
-temperament
-safety
-meat quality

Question 11

scrotum

Answer 11

-regulates temp.
-testes must be kept cooler than body temp

Question 12

how does the scrotum and testes move away or towards the body

Answer 12

cremaster muscle (around spermatic cord) and tunica dartos (inside scrotum skin)

Question 13

epididymis

Answer 13

-along surface of each testicle
-sperm maturation and storage

Question 14

vas deferens

Answer 14

-thick & muscular
-extends from bladder and joins urethra
-propels sperm to urethra

Question 15

vasectomy

Answer 15

-part of vas deferens removed so sperm cannot reach urethra

Question 16

spermatic cord

Answer 16

-links testes with rest of body
-contains blood vessels, nerves, vas deferens
-testicular artery carries blood to testes

Question 17

pampiniform plexus

Answer 17

-surrounds testicular artery
-cools blood going to testes

Question 18

testicles temp. is regulated by

Answer 18

-scrotum
-cremaster muscle
-tunica dartos muscle
-pampiniform plexus

Question 19

urethra

Answer 19

-carries urine
-located in penis
-accessory glands empty into urethra
-semen travels thro during breeding

Question 20

accessory glands

Answer 20

-liquid volumes of semen
-fructose (energy for sperm)
-no urine
-prostate, seminal vesicles, bulbourethral glands

Question 21

penis

Answer 21

-contains urethra
-attached to pelvis
-large blood supply and sensory nerve endings

Question 22

prepuce

Answer 22

-skin that protects the penis

Question 23

sigmoid flexure

Answer 23

-S-shaped in bend of penis of bulls, rams, boars
-straightens to extend penis
-retractor muscle pulls back into shape