Placental Hormones and some random facts about rate of multiple births

Human Chorionic Gonadotropin (hCG) is produced by?

placenta (chorion)

What does the hCG stimulates?

corpus luteum (proestrogen)

Inhibin is produced by?

Ovaries and Sertoli

What is the function of Inhibin?

Stop production of FSH

Oxytocin is produced by?

Posterior Pituitary (Hypothalamus)

What is the function of Oxytocin?

Stimulating milks release and uterine contraction

Gonadotropin-releasing hormone (GnRH) is produced by?

Hypothalamus

What is the function of GnRH?

stimulates release of FSH and LH

FSH is produced by?

anterior pituitary

What is the function of the Follicle Stimulating Hormone (FSH)?

Stimulate Sertoli cells in males and follicle growth/estrogen release in females

LH is produced by?

anterior pituitary

What is the function of the Luteinizing Hormone (LH)?

Stimulates Interstitial cells in males and development of the corpus luteum in females

What is the function of Estrogen?

Female Sex characteristics in males and endometrium maintenance

Estrogen is produced by?

ovaries, placenta, and corpus luteum

Relaxin is produced by?

Ovaries and Placenta

What is the function of Relaxin?

Relaxes ligaments and widens cervix

Progesterone is produced by?

ovaries and corpus luteum

What is the function of Progestrone?

prepares endometrium for pregnancy

What is the source

What is the function of the

What causes conjoined twins?

when the splitting of the blastomeres or of embryonic disc is not fully complete

What are the rates of multiple births?

Twins: 1/89 births

Triplets: 1/7921 births

Quadruplets: 1/704,969 births