MCDB 1B Hormones Vocab

MCDB 1B Hormones Vocab - endocrine cell releases hormones...

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endocrine cell releases hormones circulating hormones hormones are carried through blood vessels to target cell local hormones hormones that utilize diffusion to reach target cell. 2 types: autocrine and paracrine. autocrine hormones hormones that act on the secreting cell itself paracrine hormones act on cells near the site of the release. paracrine hormones are released in tiny amounts, or are inactivated rapidly by enzymes, or are taken up efficiently by local cells. they never get into the circulatory system. epinephrine ie, adrenaline. this is secreted from adrenal cells when the nervous system reacts to an emergency. result: fight-or-flight response. epinephrine attaches to G- protein coupled receptors. peptides or proteins (characteristics of hormone group) 1. are water soluble and transported by vesicles out of the cell that made them. peptide hormone receptors are localized in the surface of target cells. examples: growht hormone, insulin steroid hormones 1. are lipid soluble and membrane permeable. can diffuse out of the cell that made them. can diffuse into the target cells. in the blood they must be bound to carrier proteins. the receptors for lip-soluble hormones are INSIDE the cells,
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This note was uploaded on 04/09/2008 for the course MCDB 1B taught by Professor Weimbs during the Spring '08 term at UCSB.

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MCDB 1B Hormones Vocab - endocrine cell releases hormones...

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