BIO SCI 75 Lecture Notes - Lecture 6: Vasectomy, Ovulation, Prolactin
Document Summary
Lecture 6: most common sti in the united states is hpv. Steps of a vasectomy: cutting of the vas defrins. After a vasectomy sperm does not exit the penis during ejaculation: nutrients are still present in the semen after a vasectomy. Progesterone can be given to males such as by depo-provera injection. This suppresses testosterone and makes the male infertile. Progesterone mimics the effect of testosterone on the hypothalamus. It is hard to make a male pill because sperm is constantly produces. Side effects are severe, male characteristics can be compromised. A oocyte can not pass to the uterus with this procedure. The best time to get pregnant is when ovulation occurs within 24 hours of the egg ovulating or it will start the other cycle of menstruation. Also matter how long sperm has been there: ovulation indicated by a rise in body temperature, when estrogen and progesterone levels are high fsh and lh release are inhibited.
