Human Physiology: An Integrated Approach (8th Edition)
Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Chapter 15.3, Problem 9CC

Skeletal muscle arterioles have both α- and β-receptors on their smooth muscle. Epinephrine can bind to both. Will these arterioles constrict or dilate in response to epinephrine? Explain.

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Leukotrienes from damaged tissue cause smooth muscle in local blood vessels to vasodilate (increase the diameter of the vessel lumen). Is this an example of (a) autocrine stimulation or (b) paracrine stimulation? Explain.
2) List the names of the two major Contractile Proteins. Which of the proteins is "bound" and "anchored" to the cell membrane? The other protein essentially "floats" within the ctyoplasm; which contractile protein "floats". 3) Contractions in a muscle cell (or fiber) is always stimulated and intiated by a rapid rise in intrallcellular calcium. Write a brief paragraph or two explaining the differences in the sources of Contraction- causing-Calcium within the 3 different muscle-cell types.
Activation of β2-adrenergic receptors in vascular smooth muscle stimulates vasodilation / vasoconstriction. Give an example of organs where this occurs.

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Human Physiology: An Integrated Approach (8th Edition)

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GCSE PE - ANTAGONISTIC MUSCLE ACTION - Anatomy and Physiology (Skeletal and Muscular System - 1.5); Author: igpe_complete;https://www.youtube.com/watch?v=6hm_9jQRoO4;License: Standard Youtube License