Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159363
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: McGraw-Hill Publishing Co.
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Chapter S3, Problem 2.2A
Describe the effect of an increased potassium ion
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Laboratory Manual For Human Anatomy & Physiology
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- Below is a figure from a 2015 paper that characterizes the effect of venom from the spider Selenocosmia hainana on voltage-gated sodium channels. According to the I-V curve (current-voltage curve) in Figure panel B, what is the effect of the venom on voltage-gated sodium channels? Current is on the y-axis and voltage is on the x-axis during an action potential. The figure legend denotes the concentration of the venom being applied. A C rHNTX-IV (10 μM) -rHNTX-IV (100 nM) Control Control 5 nA 10 ms r 5 nA 10 ms rHNTX- IV (10 μM) B D -80 -80 -60 -60 A -40 -40 V (mv) -20 V(mv) -20 be TOLF 2-6 I (NA) -8 ON -12 10 -12 -14 -8 -10 (NA) Control 100 nM — 10 μΜ 40 -Control -- 10 μM 40arrow_forwardDecreased K+ Ion concentration in the perilymph would result in the following Decreased hearing ability Increased hearing ability No effect on hearingarrow_forwardPlease answer number 4 for: "Pacific Cownose Ray"arrow_forward
- Body fluids of eumetazoan animals are seperated into fluid " compartments" . Name these compartments and explain how compartmentalization may differ in animals with open and closed circulatory systems.arrow_forwardDescribe the homeostatic functions of the vertebrate circulatory system. What function are maintained at relative stability?arrow_forwardDiagram or write out a possible reflex control pathway for the diving reflex in humans, is this a positive or negative feedback loop?arrow_forward
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