quiz 7 2023

Question 1

what type of tissue comprises the posterior lobe of the pituitary

Answer 1

neural tissue

Question 2

what are the 3 stages of sexual differentation, in order of occurance?

Answer 2

chromosomal sex
gonadal sex
phenotypic sex

Question 3

what reproductive hormones are produced in the anterior putiatey?

Answer 3

FSH
LH

Question 4

what is most responsible for testicular descent

Answer 4

gabernaculum

Question 5

what is the neural control center for reproductive hormones

Answer 5

hypothalamus

Question 6

how does gonadotropin-releasing hormones (GnRH) elicit an effect on the anterior pituitary?

Answer 6

hypothalamo-phyophyseal portal system

Question 7

which hormone is a peptide?

Answer 7

gonadotropin-releasing hormone (GnRH)

Question 8

what hormone in the brain defeminizes the hypothalamus, so a surge center does not develop?

Answer 8

estrogen

Question 9

what single factor aids in preventing defeminization of the female hypothalamus?

Answer 9

alpha fetoprotein

Question 10

what is the dominant hormone of the follicular phase of the estrous cycle

Answer 10

estrogen

Question 11

what is the dominant hormone of the luteal phase of the estrous cycle

Answer 11

progesterone

Question 12

which animals are ALL seasonally polyestrous

Answer 12

horses
sheep
goats

Question 13

what stage of the estrous cycle is known for female sexual receptivity

Answer 13

estrus

Question 14

what type of feedback does estrogen exert on the hypothalamus

Answer 14

positive

Question 15

what structure on the ovary produces progesterone

Answer 15

corpus luteum (CL)

Question 16

where is prostaglandin F2 alpha produced?

Answer 16

uterus

Question 17

what type of feedback does progesterone exert on the hypothalamus?

Answer 17

negative

Question 18

what 2 cells are involved in the 2-cell,2-gonadotropin model in the male

Answer 18

sertoli cell
leydig cell

Question 19

what creates the blood-testes barrier

Answer 19

tight junctions between sertoli cells

Question 20

what is the result of capacitation?

Answer 20

hyper-activated spermatozoa

Question 21

what sperm reaction causes the block to polyspermy?

Answer 21

cortical reaction

Question 22

what in the one-celled, fertilized ova called once it has undergone syngamy?

Answer 22

zygote

Question 23

in ruminants, maternal recognition of pregnancy is mediated by interferon tau. what produces interferon Tau

Answer 23

trophoblast cells of the embryo

Question 24

what type of placenta does a cow have

Answer 24

epitheliochorial
cotyledonary

Question 25

what is the maternal contribution to the placentome?

Answer 25

caruncle