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How the Body Works : Hormones at puberty

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Uploaded by on Aug 1, 2007

How the Body Works : Hormones at puberty

A boy reaches puberty when the hypothalamus directs the pituitary gland to increase the secretion of the trophic hormones--luteinizing hormone, follicle-stimulating hormone and adrenocorticotrophic hormones. These act on the testes to start the production of sperm and on the adrenal cortex and testes to produce male hormones, or androgens. Testosterone, the most important androgen, promotes and controls the devlopment of the sex organs and such secondary sexual characteristics as pubic and facial hair. In a girl, the trophic hormones stimulate the ovaries and adrenal glands to secrete androgens that control the shape of the female body. The ovarian hormones, progesterone and estrogen, initiate menstruation.

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  • wat the hell is this

  • um... wtf did i just watch? i want the minute of my life that this thing wasted back.

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All Comments (19)

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  • for those dumb asses who dont know. that is what a flow chat looks like.

  • what is it a rolling pin?

  • ? a bit odd aint it!!

  • So apparently acording to this a pair of balls looks like a giant rectengular block.

  • Damn you Hormones.

  • Nice try. Keep it up check out esteembpo + com for social media marketing. XCVB

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