10A hormonal control of reproduction

cyclic activity often related to seasonal change

reproduction is a

hormonal control

reproductive cycle is under

day length, rain, temperature, lunar cycle

environmental cues

testes and ovaries

FSH and LH target

secreted by hypothalamus to trigger FSH and LH production

Gonadotropic release hormone is

esterous, menstrual

types of reproductive patterns in mammals

antropoid primates

menstrual cycle is characteristic of

lower vertebrates

estrous cycle is characteristic of

pronounced behavioral cycle than menstrual cycle

estrous cycle

period of sexual activity, only time the vagina permits mating

Estrus

changes in the uterus, uterine cycle

menstrual cycle

ovarian cycle

uterine cycle is determined by

proestrous

stages of estrous

period of preparation, follicles grow

proestrous stage

when mating occurs within the time range of ovulation

estrous stage

period of repair

metestrus

uterus returns to original state, small and anemic

diestrus

single estrous breeding season

monoestrous

many estrous cycle in a breeding season

polyestrous

ovaries

estrogen is produced by

testes

testosterone is produced by

hypothalamus,, GnRH, anterior pituitary, FSH (act on setoli), LH (act on Leydig)

hormonal control in males

spermatogenesis

FSH in males stimulates

Leydig cells to secrete testosterone

LH stimulates

inhibin release

FSH in males and females is regulated by

negative

testosterone is regulated by ___ feedback loop

testosterone and estrogen

primary and secondary sex characteristics are controlled by

hypothalamus secrete GnRH, anterior pituitary releases FSH and LH, FSH (granulosa) and LH (Theca)

hormonal regulation in females

androgens

Theca cells produce

estrogen via aromatase

androgens in the granulosa produce

granulosa

estrogen is secreted by

negative

estrogen produced is regulated by a ___ feedback loop

inhibin

granulosa release