10 11 2 12 True or false: at the axon terminal, voltage gated sodium channels open, directly causing the release of neurotransmitters into the synaptic cleft. True False 00000 Assuming action potential starts at its usual location, what prevents an action potential from traveling backwards when going down an axon? only one action potential is occurring at a time the opening of voltage gated potassium channels the closing of voltage gated sodium channels the inactivation of voltage gated sodium channels the presence of myelin sheaths Where do you expect to find voltage-gated calcium channels? at the axon hillock 0000 at the axon terminal on the postsynaptic cell in the nodes of ranvier in dendrites

10 11 2 12 True or false: at the axon terminal, voltage gated sodium channels open, directly causing the release of neurotransmitters into the synaptic cleft. True False 00000 Assuming action potential starts at its usual location, what prevents an action potential from traveling backwards when going down an axon? only one action potential is occurring at a time the opening of voltage gated potassium channels the closing of voltage gated sodium channels the inactivation of voltage gated sodium channels the presence of myelin sheaths Where do you expect to find voltage-gated calcium channels? at the axon hillock 0000 at the axon terminal on the postsynaptic cell in the nodes of ranvier in dendrites

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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1. Why does the action potential not go back to where it came from? (Multiple answers possibly) the absolute refractory period prevents this from happening Sodium voltage gated ions in the area where the action potential just came from are fully activated or inactivated Sodium voltage gated ions bind to the Na+ ions, preventing them from diffusing backwards Na+ only diffuses forward in the axon 2. When neurotransmitter binds to _______________ at the dendrites, it results in a _____________ potential Ligand gated ion channels | action Voltage gated ion channels | action Voltage gated ion channels | graded Ligand gated ion channels | graded
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