CAS BI 107 Lecture Notes - Lecture 8: Reproductive System, Human Chorionic Gonadotropin, Corpus Luteum
30 Oct 2018
School
Department
Course
Professor
Document Summary
Fsh and lh are released from the interior pituitary and act on the ovaries. Estrogen and progesterone are released from the ovaries and act on the uterus (endometrium) Estrogen inhibits growth of other follicles (and fsh) A surge in lh causes ovulation (egg release) Rupturing of follicle creates a corpus luteum. Estrogen and progesterone inhibit fsh and lh. No longer inhibited, fsh can start menstrual cycle again. If fertilisation of egg occurs, the zygote releases a hormone (hcg) which maintains the corpus luteum. In vitro fertilisation refers to fertilisation that occurs outside the body ("in vitro" = "in glass") Ormone treatments to develop follicles (fsh to stimulate follicle growth ; hcg for follicle maturation) Est for pregnancy is conducted to see if implantation was successful. Perm selected, prepared (capacitation) and then injected into egg via intracytoplasmic sperm injection (icsi) Chance for infertile couples to have children. Genetic screening of embryos could decrease suffering from genetic diseases.
