PSY354H5 Lecture Notes - Lecture 5: Follicular Phase, Fallopian Tube, Ovulation
Document Summary
Ovulation ovulation- after follicular phase ovulation starts 14 days after start of menstruation (if regular 28 day cycle) three methods to track ovulation (for those without 28 day cycle): body temperature approx. 14 days into cycle there is a dip in body temp- very precise and pronounced dip: marks the release of ovum into fallopian tube, hormonal changes sensitive to lutenizing hormone in urine drops dramatically at 14 days. Pregnancy and hormonal test: tests detect hcg (human chorionic honadotropin hormone, hcg- only present after fertilization of an egg. Stages of prenatal development: 6 weeks, all basic organs present, reference changes from embryo to fetus occurs. Sry: sry gene on y-chromosome determines male development, sry= sex determining region of the y-chromsome, sry is what makes an embryo male, therefore if you lack sry you lack the ability to develop as a male.
