PILLS Controls of Reproductive Systems by Hormones and Their Analogues

7 PILLS Controls of Reproductive Systems by Hormones and Their Analogues 

Is not everybody worried about cholesterol And cholesterol is a steroid. Well then, are not steroids bad What are steroids, anyway Chemically, they belong to a group of compounds called lipid. Lipid is a fancy (collective) term for oil-soluble compounds and includes fats, phospholipids, and steroids. Fats are chanically long chain fatty acids and almost like wax. Phospholipids are combination of fatty acids and glycerine with some special groups on top and make up the membrane of cells (Fig. 1.5). By the way, cholesterol also makes up an essential part of cell manbranes along with phospholipids. Cholesterol is indeed a necessity. Only excess presence of cholesterol is a health hazard. 

Testosterone is mainly produced and secreted by the interstitial cells of Leydig in the seminiferous tubules of testes. It affects the development of the male sexual organ and has effects on body hair, muscle, bone calcium, and others. 

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