Chap. 19 - Endocrine system

Chap. 19 - Endocrine system - Human Endocrine System...

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Human Endocrine System
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Endocrine system Glands scattered throughout body Slower than nervous system responses Powerful chemicals (small amounts) Hormones must enter blood, then travel to target cells, then be cleared out at kidneys Target cells have receptors on surface, other cells do not
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What is a hormone? Chemical released by gland that travels in the blood, then binds to and acts on target cells
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Familiar glands and hormones Thyroid gland – thyroid hormone controls metabolism Pituitary gland – releases at least 9 hormones that control MANY processes, called the “master gland” Testes and ovaries – sex hormones allow for sperm and egg production
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How is hormone research done?
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Puberty For girls: 12.5 (range 9-16) Girls continue to grow in height for about 4 years, then stop For boys: 15 (range 10-17) Boys continue to grow in height for about 6 years, then stop Cells that make GnRH mature…
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How could you find the source of a
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This note was uploaded on 01/05/2010 for the course BIO 101 taught by Professor Anderson during the Fall '09 term at Point Loma.

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Chap. 19 - Endocrine system - Human Endocrine System...

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