Repro

Question 1

Where does fertilization occur?

Answer 1

Ampullary Isthmic Junction (AIJ)

Question 2

What is the function of testes?

Answer 2

produce male gamete (sperm/spermatoza)
produce male hormones (testosterone)

Question 3

What is Cryptorchid?

Answer 3

testes do not descend
bilateral: both are retained (sterile)
Unilateral: one is retained (fertile)

Question 4

Heat Regulation of Testes

Answer 4

should be 4 degrees celsius below body temperature

Question 5

What does the epididymus do?

Answer 5

transport spermatozoa
concentration of sperm
storage of sperm
maturation of sperm

Question 6

What are the accessory glands?

Answer 6

*contribute to fluid volume of semen
Vesicular Glands
Prostate Gland
Cowpers Gland (Bulbourethral)

Question 7

Testosterone Production

Question 8

What structure produces progesterone?

Answer 8

Corpus luteum

Question 9

Progesterone

Answer 9

maintains pregnancy
inhibits repro behavior
inhibits GnRH release
secretions (prep uterus to receive embryo

Question 10

Luteinizing Hormone (LH)

Answer 10

ovulation
formation of corpora lutes
progesterone secretion

Question 11

Follicle Stimulating Hormone (FSH)

Answer 11

follicular development
estradiol synthesis

Question 12

Prostaglandin

Answer 12

regression of CL (luteolysis) and ovulation
causes uterine contractions at parturition or for cleansing the uterus

Question 13

Oxytocin

Answer 13

milk letdown
released during parturition to cause uterine contractions
smooth muscle contraction

Question 14

What is estrogen?

Answer 14

female sex hormone responsible for behavior during estrus and activity of reproductive tract

Question 15

What is the preferred method of AI in cattle?

Answer 15

AM/PM Rule

Question 16

What are the advantages of using AI?

Answer 16

genetic improvement
disease control
improved record keeping
eliminates need for bulls on farms
more economical