Reproduction Anatomy & Estrus

Question 1

4 major functions of the male repro system

Answer 1

1. produce sperm
2. introduce sperm into female repro tract
3. testes - production of sperm & testosterone
4. protection & supporting structures

Question 2

the testes produce:

Answer 2

sperm & testosterone

Question 3

3 supporting structures of male repro tract

Answer 3

1. scrotum
2. cremaster & Tunica Dartos Muscle
3. spermatic cord

Question 4

purpose of the cremaster & Tunica Dartos Muscle

Answer 4

temperature control

Question 5

purpose of spermaic cord

Answer 5

blood regulation & blood to testes

Question 6

5 secondary sex organs of male repro tract

Answer 6

1. ducts that carry sperm out of testes & body
2. epididymis
3. vas deferens
4. urethra
5. penis

Question 7

accessary sex glands add ____ to sperm

Answer 7

fluid

Question 8

3 accessary sex glands (male)

Answer 8

1. seminal vesicles
2. Cowper’s gland (bulbourethral glands)
3. prostate gland

Question 9

2 functions of seminal vesicles

Answer 9

1. secrete fluid

2. energy substrates & buffers

Question 10

function of Cowper’s gland

Answer 10

produces gel - forms plug in female repro tract

Question 11

size of Cowper’s gland

Answer 11

1.5 inches in diameter

Question 12

2 function of prostate gland

Answer 12

1. fluid & salts to semen

2. most of medium for transport

Question 13

the prostate gland acts like a:

Answer 13

hot dog bun to the urethra

Question 14

2 main structures in the testis

Answer 14

1. seminiferous tubules

2. rete testis

Question 15

2 functions of seminiferous tubules

Answer 15

1. sperm formation

2. spermatogenesis - FSH stimulates prod. of sperm

Question 16

function of tete testis

Answer 16

collecting ducts for sperm

Question 17

3 parts of epididymis

Answer 17

1. caput (head)
2. corpus (body)
3. cauda (tail)

Question 18

what happens in the epididymis caput

Answer 18

sperm becomes fertile

Question 19

what is the purpose of the epididymis cauda

Answer 19

warehouse for sperm (storage)

Question 20

how long does it take for sperm maturation

Answer 20

35 days

Question 21

retractor penis muscle contracted & forms “S” shape

Answer 21

penis not stimulated

Question 22

retractor penis muscle relaxes, “S” bend unfolds, & penis extends

Answer 22

penis stimulated

Question 23

during ejaculation penis twists & the free end forms a corkscrew shape

Answer 23

fibroelastic penis

Question 24

how much do boars ejaculate & how long does it take

Answer 24

150-200 ml; 5-10 min

Question 25

accumulates urine & sloughed cells (has an odor)

Answer 25

preputial pouch diverticulum

Question 26

what does the ovaries produce

Answer 26

ova & hormones

Question 27

name 4 hormones produced by the ovaries

Answer 27

1. estrogen*
2. progesterone*
3. relaxin
4. inhibin
5. activin

Question 28

sexual maturity for female pigs

Answer 28

5-7 months

Question 29

3 parts of the oviduct

Answer 29

1. infidibulum
2. ampulla
3. isthmus

Question 30

what does the infidibulum do?

Answer 30

catches follicles

Question 31

where does fertilization occur

Answer 31

ampulla isthmus junction

Question 32

how long are the horns of the uterus

Answer 32

4-5 ft long

Question 33

site of implantation

Answer 33

uterine horns

Question 34

site of semen deposition

Answer 34

cervix

Question 35

welcome center/vestibule to the female tract

Answer 35

vagina

Question 36

estrous cycle length

Answer 36

21 days

Question 37

estrus length

Answer 37

18-24 hours

Question 38

as estrus approaches how many follicles form on each ovary

Answer 38

6-10 follicles

Question 39

sign of estrus

Answer 39

standing heat

Question 40

gilts & sows stand immobile when pressure put on back (back pressure test)

Answer 40

standing heat