HUMAN SEXUALITY . MALE ANATOMY. PENIS. Male sexual organ consisting of the root, shaft, and glans, also contains the urethra, through which urine is excreted. . SCROTUM . Keeps testes cooler than the normal body temperature (to help make sperm)
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STRUCTURE: AKA ‘The Womb’ A pear shaped hollow organ with very thick, muscular walls lined with ENDOMETRIUM (a rich supply of blood vessels). The base of the uterus is called the CERVIX. The cervix opening must expand dramatically during labor/birth.
FUNCTION: To nurture the developing embryo and fetus.The fertilized egg will implant in the endometrium and continue to develop in the uterus. If no egg implants, the lining is shed during MENSTRUATION.
LOCATION: At the top of the Vagina behind the bladder between the two ovaries.
STRUCTURE: A hollow, tunnel like structure,(~4.5 inches) very muscular passage that has the ability to expand dramatically during birth to allow baby to come through, and provides and exit for menstrual flow. Also, is coated with vaginal secretions that are slightly acidic to control infection.
FUNCTION: The“birth canal”, and a passage way for sperm and menstrual blood.
LOCATION: Leads from the base of the uterus (cervix) to the outside of the body.
The hormone estrogen causes the endometrium to become thick and rich with blood. Progesterone, another hormone released by the ovaries, keeps the endometrium thick with blood so that the blastocyst can attach to the uterus and absorb nutrients from it. This process is called implantation
After approximately 8 weeks, the embryo is about the size of an adult's thumb, but almost all of its parts — the brain and nerves, the heart and blood, the stomach and intestines, and the muscles and skin — have formed, complete CNS and digestive system, a beating heart, well defined fingers and toes, beginnings of facial features