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What are the endocrine glands that regulate sexual activity in males? How does this regulation work and what are the involved hormones?
In males the sexual activity is regulated by the endocrine glands hypophysis (pituitary), adrenals and gonads (testicles).
The FSH (follicle-stimulating hormone) secreted by the adenohypophysis acts upon the testicles stimulating the spermatogenesis. The LH (luteinizing hormone), another adenohypophyseal hormone, stimulates the production of testosterone by the testicles too. Testosterone, whose production intensifies after the starting of puberty, acts in several organs of the body and it is responsible for the appearing of the male secondary sex characteristics (beard, body hair, deep voice, enhance of the muscle and osseous mass, maturation of genitalia, etc.) Testosterone also stimulates spermatogenesis.
What are the two groups of defense mechanisms of the body against foreign or harmful agents? What is the difference between them? The body has many defense mechanisms against f
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