PSYB20H3 Lecture Notes - Lecture 2: Immature Ovum, Semen Analysis, Endometriosis
Document Summary
Process by which sperm and ovum combine to create a single cell and a zygote. Duplicates itself repeatedly by cell division to make up a baby. Have about 2 million immature ova in their ovaries at birth, each contained in a follicle. Ovulation occurs about once every 28 days until menopause. After being expelled from the ovary, the ovum is swept through the fallopian tube toward the uterus. Sperm enter the vagina through ejaculation and travel through the cervix fertilization takes place in the fallopian tubes if nothing happens expelled through menstruation. Birth control unable to mature the egg. Genetic low sperm count insufficiently motile sperm. Women failure to produce egg poor quality egg increase by age. Acidic that kill off all the sperm. Scarring because of abortions, endometriosis lining of the uterus growth outside. More than 3 million children worldwide have been conceived through art.
