Describe the steps of the action potential (as it travels down the axon of a neuron).<\/p>\n\n\n\n
The correct answer and explanation is:<\/strong><\/mark><\/p>\n\n\n\n The steps of an action potential traveling down the axon of a neuron include:<\/p>\n\n\n\n An action potential<\/strong> is an electrical signal that travels down the axon of a neuron to transmit information. It is a rapid, temporary change in the membrane potential that allows communication between neurons or between neurons and muscles.<\/p>\n\n\n\n The action potential travels<\/strong> along the axon like a wave, with each segment undergoing these changes in sequence. This rapid signaling is essential for nervous system function, including muscle movement, sensation, and thought.<\/p>\n","protected":false},"excerpt":{"rendered":" Describe the steps of the action potential (as it travels down the axon of a neuron). The correct answer and explanation is: Correct Answer: The steps of an action potential traveling down the axon of a neuron include: 300-Word Explanation: An action potential is an electrical signal that travels down the axon of a neuron […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-21950","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/21950","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=21950"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/21950\/revisions"}],"predecessor-version":[{"id":21951,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/21950\/revisions\/21951"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=21950"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=21950"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=21950"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Correct Answer:<\/strong><\/h3>\n\n\n\n
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\n\n\n\n300-Word Explanation:<\/strong><\/h3>\n\n\n\n
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At rest, the inside of a neuron is negatively charged relative to the outside (about -70 mV). This is maintained by the sodium-potassium pump, which moves 3 Na\u207a ions out and 2 K\u207a ions into the cell, and by leak channels that allow more K\u207a to leave than Na\u207a to enter.<\/li>\n\n\n\n
When a neuron is stimulated past a certain threshold (around -55 mV), voltage-gated sodium (Na\u207a) channels open<\/strong>, allowing Na\u207a to rush into the cell. This influx causes the inside of the cell to become more positive, reaching up to +30 mV.<\/li>\n\n\n\n
Soon after depolarization, Na\u207a channels close<\/strong> and voltage-gated potassium (K\u207a) channels open<\/strong>. K\u207a ions flow out of the cell, restoring the negative internal charge.<\/li>\n\n\n\n
K\u207a channels stay open slightly longer than needed, causing the membrane potential to become more negative than the resting potential (around -80 mV). This prevents the neuron from firing again too quickly (refractory period).<\/li>\n\n\n\n
Finally, all ion channels reset. The sodium-potassium pump restores the original distribution of ions, returning the neuron to its resting potential, ready for the next action potential.<\/li>\n<\/ol>\n\n\n\n