Editorial Reviews - Hormones by Type of Organism From the Publisher Chapters: Amphibian Hormones, Fish Hormones, Horse Hormones, Human Hormones, Insect Hormones, Plant Hormones, Salicylic Acid, Insulin, Ethylene, Estrogen, Testosterone, Progesterone, Polyamine, List of Human Hormones, Calcitonin, Prolactin, Glucagon, Follicle-Stimulating Hormone, Luteinizing Hormone, Anti-Müllerian Hormone, Plant Peptide Hormones, Florigen, Thyroid-Stimulating Hormone, Triiodothyronine, Insect Diuretic Hormones, Abscisic Acid, Gibberellin, Brassinosteroid, Growth Hormone Releasing Hormone, Vitellogenin, 1-Methylcyclopropene, Melanocyte-Stimulating Hormone, Cytokinin, Adipokinetic Hormone, Gibberellic Acid, Bursicon, Jasmonate, Systemin, Methyl Jasmonate, Strigolactone, Prothoracicotropic Hormone, Jasmonic Acid, Allatostatin, Equine Chorionic Gonadotropin, Brassinolide, Corpus Allatum, Traumatic Acid, 3,3'-Diiodothyronine, Triacontanol, Traumatin, 3'-Monoiodothyronine, Salcatonin, Efsh, Phytosulfokine. Excerpt: Testosterone is a steroid hormone from the androgen group and is found in mammals, reptiles, birds, and other vertebrates. In mammals, testosterone is primarily secreted in the testes of males and the ovaries of females, although small amounts are also secreted by the adrenal glands. It is the principal male sex hormone and an anabolic steroid. In men, testosterone plays a key role in the development of male reproductive tissues such as the testis and prostate as well as promoting secondary sexual characteristics such as increased muscle and bone mass and hair growth. In addition, testosterone is essential for health and well-being as well as the prevention of osteoporosis. On average, an adult human male body produces about ten times more testosterone than an adult human female body, but females are, from a behavioral perspectiv... More: http://booksllc.net/?id=30983 Synopsis Chapters: Amphibian Hormones, Fish Hormones, Horse Hormones, Human Ho