Reproductive system Flashcards
In both makes & females how is FSH and LH released?
hypothalamus releases GnRH, which causes the anterior pituitary to release FSH (and LH)
(In females) what does FSH do to develop primordial follicles?
FSH acts on an ovary to stimulate development of some primordial follicles
(In females) what do primordial follicles do to release LH
They produce estrogens which cause the rate of production of GnRH to increase which in turn causes the anterior pituitary to release LH
(In females) what does LH do to cause ovulation
LH promotes the development of one follicle and causes its ovum to be ovulated
(In females) Somatic cells found in the left over follicles (corpus luteum). They releases progesterone.
granulosa cells
(In females) What does progesterone do?
Progesterone prepares the uterus to receive a fertilized egg and decreases the rate of GnRH and FSH release so that additional primordial follicles aren’t stimulated to continue their development.
(In males) What does LH do to stimulate testosterone.
LH stimulates the interstitial (Leydig) cells of testes to produce testosterone.
(In males) How does FSH promote spermiogenesis
FSH stimulates the nurse (sustentacular / Sertoli) cells in testes (in the presence of testosterone) promotes spermiogenesis
Where is sperm produced?
seminiferous tubules
Where is sperm stored?
epididymis
A tube that carries sperm from the epididymis to the ejaculatory duct during ejaculation
vas (ductus) deferens
Where do sperm mix with semen from the seminal vesicles and prostate fluid
ejaculatory ducts
