The vagina receives the male's penis during sexual intercourse and delivers the baby during childbirth. This page was last changed on 28 August , at Test Your Body Smarts. This involves placing the man's erect penis into the woman's vagina. Retrieved 14 October Ready for Med School? The reproductive system produces gametes in each sex, a mechanism for their combination, and in the female a nurturing environment for the first 9 months of development of the infant. Planaria are flat worms widely used in biological research.
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Sexual and Reproductive Anatomy
Start the Quiz 0 of 10 questions complete Ready for Med School? Both of these events would make pregnancy more likely to happen. Two men can also rub each other's sex organs, or perform oral or anal sex on each other. The vagina receives the male's penis during sexual intercourse and delivers the baby during childbirth. Test Your Body Smarts. These interact to maintain homeostasis , keeping the body in a stable state with safe levels of substances such as sugar and oxygen in the blood. They may be described as intersex. In other projects Wikimedia Commons.
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The Human Body: Anatomy, Facts & Functions
In typical prenatal development , sex organs originate from a common primordium during early gestation and differentiate into male or female sexes. Each sex organ in one sex has a homologous counterpart in the other one. Nerves connect the spinal cord and brain to the rest of the body. Men and women, and gay couples two women or two men can also use their sex organs in other ways for pleasure. The sperm is the male sex cell, or gamete, and each testicle produces more than 4 million new sperm per hour [source: The main parts of the vulva are two sets of fleshy "lips" called the labia. It includes lymph nodes, the spleen, bone marrow, lymphocytes including B-cells and T-cells , the thymus and leukocytes, which are white blood cells.
Description:The endocrine hormones serve as signals from one body system to another regarding an enormous array of conditions, and resulting in variety of changes of function. During his orgasm the man ejaculates , and his semen flows into the woman. As intercourse continues, these feelings grow stronger and stronger until the man reaches a sexual climax called an orgasm. The uterus, or womb, is where a fetus develops. The urethra also carries urine away from the bladder. The brain is the organ of thought, emotion, memory, and sensory processing , and serves many aspects of communication and controls various systems and functions. In humans, the sex organs are in the lower abdomen , at the part of the body where the legs join the torso. If a sperm in the semen reaches the woman's Fallopian tubes and fuses with an ovum, this causes the woman to become pregnant.