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Human reproduction employs internal fertilization, and depends on the integrated action of hormones, the nervous system, and the reproductive system This system basically keeps the species going. hormones Chemical substances that are produced in the endocrine glands and travel in the blood to target organs where they elicit a response. . Some common diseases: Gonorrhea, HIV, Herpes, Crabs.
Endocrine System- One of eleven major body organ systems in animals; a system of glands that works with the nervous system in controlling the activity of internal organs, especially the kidneys, and in coordinating the long-range response to external stimuli.
About every 28 days, some blood and other products of the disintegration of the inner lining of the uterus (the endometrium) are discharged from the uterus, a process called menstruation. During this time a new follicle begins to develop in one of the ovaries. After menstruation ceases, the follicle continues to develop, secreting an increasing amount of estrogen as it does so.
The ovaries of sexually-mature females secrete: Estrongen and progesterone. Estrogens are steroids. They are primarily responsible for the conversion of girls into sexually-mature women.
Gonorrhea is spread through contact with the penis, vagina, mouth, or anus. Ejaculation does not have to occur for gonorrhea to be transmitted or acquired. Gonorrhea can also be spread from mother to baby during delivery. Genital herpes is a sexually transmitted disease (STD) caused by the herpes simplex viruses type 1 (HSV-1) and type 2 (HSV-2). Most genital herpes is caused by HSV-2.
MALES! The principal androgen (male sex hormone) is testosterone. This steroid is manufactured by the interstitial (Leydig) cells of the testes. Secretion of testosterone increases sharply at puberty and is responsible for the development of the so-called secondary sexual characteristics (e.g., beard) of men. A number of synthetic androgens are used for therapeutic purposes. These drugs promote an increase in muscle size with resulting increases in strength and speed. This has made them popular with some athletes, e.g., weight lifters, cyclists, runners, swimmers, professional football players. Usually these athletes (females as well as males) take doses far greater than those used in standard therapy. Such illicit use carries dangers (besides being banned from an event because of a positive drug test): acne, a decrease in libido, and — in males — testicle size and sperm counts to name a few. MEN NEED ESTROGEN TOO!!
Adrenal Insufficiency Adrenocortical Hyperfunction Diabeties. Diabetic Coma
