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Copyright © 1997 by Academic Press. All rights of reproduction in any form reserved.

The male testes have the dual function of being responsible for both the production and release of the germ cell, the spermatozoan, as well as the biosynthesis and secretion of the key androgenic steroid hormone, testosterone. This steroid hormone and others produced from it play a dominant role in the differentiation, growth, and maintenance of the sexual reproductive tissues necessary for continuation of the species, the growth and maintenance of secondary sex characteristics, and the anabolic effects of skeletal muscle growth and skeletal growth.

Sexually the male can be classified by six characteristics: (1) chromosomal composition and structure;

(2) gonads that are functionally and structurally testes;

(3) tonic androgen production in adequate amounts;

(4) external and internal genitalia that are appropriate for a male; (5) rearing as a male; and (6) self-acceptance of a male role. Thus, the male sexual identity is the summation of the four genetically determined organic characteristics as well as the two psychological characteristics of gender role and sex of rearing. Recent studies by B. McEwen indicate the key role of both androgens and estrogens early in fetal and postnatal development for the sexual development of the brain. In certain male species androgens also play a key role in mediating coital behavior patterns.

Cure Tennis Elbow Without Surgery

Cure Tennis Elbow Without Surgery

Everything you wanted to know about. How To Cure Tennis Elbow. Are you an athlete who suffers from tennis elbow? Contrary to popular opinion, most people who suffer from tennis elbow do not even play tennis. They get this condition, which is a torn tendon in the elbow, from the strain of using the same motions with the arm, repeatedly. If you have tennis elbow, you understand how the pain can disrupt your day.

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