Regulation of secretion of sex steroids

Question 1

function of estrogen

Answer 1

stimulate development of female sex organs and sexual characteristics
builds up uterine wall
inhibits secretion of fsh
high levels stimulate secretion of lh

Question 2

functions of progesterone

Answer 2

regulate menstrual cycle

maintain pregnancy in presence of developing embryo and fetus

Question 3

functions of testosterone

Answer 3

stimulate development of male sex organs
secondary sexual characteristics
behavioural features
inhibits secretion lh

Question 4

function of leydig/interstitial endocrinocytes

Answer 4

secrete male sex hormones

Question 5

gonadotrophin releasing hormone

Answer 5

stimulates secretion of fsh and lh when theres low concentration of testosterone

Question 6

whats the hormone inhibin

Answer 6

secreted by sustentacular cells

inhibits secretion of fsh

Question 7

functions of fsh

Answer 7

stimulates maturation of primary oocyte

Question 8

uterine cycle

Answer 8

• hypothalamus releases gonadotrophin releasing hormone
• ap releases fsh and lh
• fsh stimulates maturation of primary oocyte
• follicle produces estrogen which builds up uterine wall and inhibits fsh
• corpus luteum secrete estrogen and progesterone
• if not fertilized, corpus luteum stops producing progesterone and estrogen, resulting in lack of maintenance of uterine wall (menstruation)