L80: Reproduction 2

Question 1

Seminal vesicles secrete

Answer 1

prostaglandins - stimulate uterine/fallopian tube contractions

Question 2

Prostate gland secretes

Answer 2

alkaline secretions

Question 3

In what accessory gland do sperm gain motility and lose cytoplasm? And is a reservoir for sperm? Stabilize acrosome?

Answer 3

Epididymis

Question 4

Which of the following gonadal hormones is NOT a negative inhibitor of the pituitary?

A. Activin

B. Inhibitin

C. Follistatin

D. Testosterone/Estrogen

Answer 4

A. Activin

Question 5

Which does NOT negatively feedback on hypothalamus?

A. Inhibin

B. Testosterone/Estrogen

C. Dopamine/Endorphins

D. Norepinephrine

Answer 5

D. NE

Question 6

Which of the following PROMOTES release of LH and FSH?

A. Inhibin

B. Dopamine/Endorphins

C. Testosterone/Estrogen

D. Continuous exposure to GnRH

E. Pulsatile exposure to GnRH

Answer 6

E.

Question 7

Whats the major regulator of FSH?

Answer 7

inhibin

Question 8

What’s the major regulator of LH?

Answer 8

Testosterone

Question 9

What does corpus luteum secrete?

Answer 9

Progesterone

Question 10

Whats an acrosome on a spermocyte?

Answer 10

“A cap of membranes containing digestive enzymes”

Question 11

Estradiol is carried by what binding protein?

Answer 11

SHBG

Question 12

Progesterone is transported in blood by what carrier protein?

Answer 12

CBG

Question 13

What is the most hydrophilic hormone on this table?

Answer 13

Androstendione

Question 14

What is the most hydrophobic hormone on this table?

Answer 14

Dihydrotestosterone

Question 15

what mechanism keeps the testes at the right temperature

Answer 15

counter-current heat exchange

Question 16

What stage of spermatogenesis, does the acrosome form?

Answer 16

Spermiogenesis

Question 17

Formation of residual body occurs in what stage of spermatogenesis?

Answer 17

Spermeation

Question 18

During spermiogenesis, developing sperm are attached to the sertoli cell via

Answer 18

tight junction

Question 19

Gametes are immunologically distinct from parent. It is protected from the parent immune system via

Answer 19

tight junctional border in testes

Question 20

Prostaglandins, secreted from the seminal vesicles, promote

Answer 20

contraction of the uterus and fallopian tubes.

Question 21

bodybuilders coming off steroids take

Answer 21

hCG

Question 22

If spermatogenesis is TOO FAST, the developing germ cell release signals to Sertoli, which increase release of _____

Answer 22

inhibin which negatively regulates ant. pituitary release of FSH

Question 23

If spermatogenesis is too slow, then sertoli cells secrete less ___________ which releases suppression of ant. pituitary to secrete _______

Answer 23

inhibin, FSH

Question 24

NO stimulates _________, producing cGMP that leads to vasodilation

Answer 24

guanylyl cyclase

Question 25

Which vein collapses during erection, preventing blood outflow?

Answer 25

Superficial dorsal vein

Question 26

Emission is under control of

Answer 26

sympathetic spinal reflex

Question 27

give me an example of hypogonadotrophic hypogonadism

Answer 27

hyperprolactinemia (strong negative feedback of prolactin on hypothalamus)

Question 28

give me 3 examples of incomplete androgen insensitivity

Answer 28

A. Testosterone receptor defect B. Testosterone pathway defect C. 5-alpha reductase deficiency

Question 29

zona pellucida

Answer 29

"egg shell" made of mucopolysaccharide immediately around oocyte formed by granulosa cells

Question 30

cumulus oophorus

Answer 30

granulosa cell that docks oocyte to wall of follicle

Question 31

How does the graafian follicle grow?

Answer 31

Antral fluid increases as mucopolysaccharides depolymerize and pull water

Question 32

How does the oocyte move into fallopian tubes

Answer 32

fimbrae sweep it in

Question 33

corpus luteum secretes

Answer 33

progesterone

Question 34

if fertilization doesnt occur

Answer 34

luteolysis

Question 35

main action of activin

Answer 35

stimulates FSH release

Question 36

Which inhibin is from the dominant graafian follicle?

Answer 36

inhibin B

Question 37

What inhibin is from the corpus luteum?

Answer 37

inhibin A

Question 38

What is the rate limiting step in ovarian steroid biosynthesis

Answer 38

Cholesterol to pregnenalone via desmolase

Question 39

What is E1

Answer 39

estrone

Question 40

What is E2

Answer 40

Estradiol (dominant estrogen)