Male Hormones & Their FunctionsTestosterone is hormonea male sex hormone that is important for sexual and reproductive development. The National Institutes of Health regards testosterone as the most important male hormone. Women also produce testosterone, amle at lower levels than men. Testosterone belongs to a the male sex hormones are called of male hormones called androgens, which are sometimes called steroids or anabolic steroids. In men, testosterone is produced mainly in testosterone and mental focus testes, with a small amount made in the adrenal glands. The brain's hypothalamus and pituitary gland control testosterone production.
Testosterone and other Male Sex Hormones Flashcards | Quizlet
Published on Dec 23, SlideShare Explore Search You. Successfully reported this slideshow. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime. Show related SlideShares at end. Full Name Comment goes here. Are you sure you want to Yes No. Ishu Sardana , Student at Ch. Rehana Khan , Student at University. Embeds 0 No embeds. No notes for slide. Male sex hormones 1. The testes secrete several male sex Hormones, which are collectively called androgens, including testosterone, dihydrotestosterone, and androstenedione.
Testosterone is so much more abundant than the Others that one can consider it to be the primary testicular Hormone, although much of the testosterone is eventually Converted into the more active hormone dihydrotestosterone in the target tissues. By that time, the testosterone is either transferred to the tissues or degraded into inactive products that are subsequently excreted.
This increase in muscle mass is associated with increased protein in the nonmuscle parts of the body as well. Testosterone has a specific effect on the pelvis to: When great quantities of testosterone or any otherandrogen are secreted abnormally in the still growing child, the rate of bone growth increases markedly, causing a spurt in total body height.
However, the testosterone also causes the epiphyses of the long bones to unite with the shafts of the bones at an early age. Therefore, despite the rapidity of growth, this early uniting of the epiphyses prevents the person from growing as tall as he would have grown had testosterone not been secreted at all. Even in normal men, the final adult height is slightly less than that which occurs in males castrated before puberty.
When the seminiferous tubules fail to produce sperm, secretion of FSH by the anterior pituitary gland increases markedly. Conversely,when spermatogenesis proceeds too rapidly, pituitary secretion of FSH diminishes.
The cause of this negative feedback effect on the anterior pituitary is believed to be secretion by the Sertoli cells of still another hormone called inhibin This hormone has a strong direct effect on the anterior pituitary gland to inhibit the secretion of FSH. Inhibin Inhibin is a glycoprotein, like both LH and FSH, with a molecular weight between 10, and 30, It has been isolated from cultured Sertoli cells. Its potent inhibitory feedback effect on the anterior pituitary gland provides an important negative feedback mechanism for control of spermatogenesis, operating simultaneously with and in parallel to the negative feedback mechanism for control of testosterone secretion.
This hormone has almost the same effects on the sexual organs as LH. During pregnancy, if the fetus is a male, hCG from the placenta causes the testes of the fetus to secrete testosterone. Teratoma all found together in the same tumorous mass 3. You just clipped your first slide! Clipping is a handy way to collect important slides you want to go back to later. Now customize the name of a clipboard to store your clips.
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