Which of the following does NOT contribute to the built in "safety factor" at the neuromuscular junction, whereby an action potential in the motor neuron almost always causes an AP in the muscle fiber High concentration of nicotinic acetylcholine receptors at the crests (top) of the postsynaptic folds High concentration of voltage-gated sodium channels in the troughs (bottom) of the postsynaptic folds OPrecise alignment of presynaptic release zones opposite the crests of the postsynaptic folds High concention of acetylcholinesterase in the synaptic cleft
Which of the following does NOT contribute to the built in "safety factor" at the neuromuscular junction, whereby an action potential in the motor neuron almost always causes an AP in the muscle fiber High concentration of nicotinic acetylcholine receptors at the crests (top) of the postsynaptic folds High concentration of voltage-gated sodium channels in the troughs (bottom) of the postsynaptic folds OPrecise alignment of presynaptic release zones opposite the crests of the postsynaptic folds High concention of acetylcholinesterase in the synaptic cleft
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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Transcribed Image Text:Which of the following does NOT contribute to the built in "safety factor" at the
neuromuscular junction, whereby an action potential in the motor neuron almost
always causes an AP in the muscle fiber
High concentration of nicotinic acetylcholine receptors at the crests (top) of the
postsynaptic folds
High concentration of voltage-gated sodium channels in the troughs (bottom) of
the postsynaptic folds
O Precise alignment of presynaptic release zones opposite the crests of the
postsynaptic folds
O High concention of acetylcholinesterase in the synaptic cleft
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