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img121 - MW Win mm Ifiwm Wmmflmm tum-WI Mac-Ilium...

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Unformatted text preview: MW Win. mm Ifiwm Wmmflmm tum-WI Mac-Ilium Dow—u @AmedI-uhmm.m mhmflflmhmmuu “PM”. Gnu—— DI—n—n—u i 7.x V 0—, , w\:~“flh Afiwm [PW-E O NOTE: Neurotransmitters use ' .. sue a; "FY / Go to the next screen. Autocrinoa act on the m that secreted them. Thus, the secretary cell itself is also the target cell. Ofien an autocrine regulates its own secretion G0 to the next erm chemicals released into interstitial ' the W a mu that is very close to the target cell. The juncture between the two cells rs called a swag, and neurotransmitter commrmication is often refuted to as W The cell that releases the neurotransmitter rs called the preMnflrmn; the target cell is called the W Communication between a neuron and its target cell' rs only directed to cells with which it has a synapse. to move from the secretory cell to the receptor of the target cell. The secretory cell and target cell are very close together. mm: W Go to the next screen: Hormones are chemicals mm m MW ”I M °‘" W "" W released from endocrine glands (or occasionally other types etch-shim ellip— @memmu-mw Wbmflh \\ of tissues) into the interstitial fluid where they can then diffuse into the blood to a target cells that can be distant from the site of hormone release. The bloodstream distributes a hormone to virtually all cells of the body, but only cells possessin receptors specifi e are e to respond us servmg as the @31ch 'x w All hormones use diffusion to get into the bloodstream but ' , g ""m’ they must travel in the bloodstream to move to their target cell The bloodstream is the main transportation mechanism 0 and when we are referring to how a chemical messenger moves to the target cell we use the main mode of transportation to describe how the messenger gets to the target cell. c ,7, ,, ,, Wm“ medm-ulun arm—nuns: m @w— @mmmmumm— “minimums-med: ) III-=- WEI. ; sun-s- tum» ‘ h Inn—u.- Kayne-Istan- 5 Dr.— lee \2! i ’ m \ . D 13h- tau—q Page 2 of 10 Go to the next screen: A special class of hormones, called neurohormones, is released by neurosecretory cells through a mechanism similar to that of neurotransmitter release. Just like the classical hormones secreted by endocrine glands, neurohormones are released into the interstitial fluid and then diffuse into the blood, which distributes them to target cells throughout the body. ANS-lemdr e‘ (QUICKLQ 'tz, my c211 (Lita HT) vial) btoocfls‘ WW ...
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