PSYB20H3 Chapter Notes - Chapter 3: Gonorrhea, Syphilis, Reserpine
1 May 2017
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Parity: whether a woman has had a child before. Stages of prenatal development the ovum only last 3 to 5 days prenatal dev. Is 38w, three trimesters: the zygote, the embryo and the fetus. The zygote first tow weeks of life sperm fertilizes the ovum, creates a zygote. The zygote goes down fallopian tube and implants in the wall of the uterus (7 days in). zygote has tendrils that penetrate the wall of the uterus (forms dependence) The second trimester is where the embryo begins. Beginning of the third week until the eighth week. Crucial structurs form in mothers uterus: 1)the amniotic sac (membrane containing watery fluid that protects organism from physical shocks, and temp. changes. (2) the placeta: fleshy, disc like structure formed by cells from lining of uterus and zygote. Works with umbilical cord. (3) umbilical cord:tube that contains blood vessels, carries blood back and forth with the placenta.
