PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Synaptic cleft
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Acetylcholine
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Receptors
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Synaptic vesicles
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Detailed explanation-1: -Neurotransmitters are stored in synaptic vesicles (SVs), membrane-bound organelles located within presynaptic axon terminals and whose activity-dependent release is essential for proper transmission of information within the brain (Jahn and Südhof, 1994).
Detailed explanation-2: -Similar to other organelles, synaptic vesicles contain monotopic and polytopic proteins (see Chap. 2) as well as associated membrane proteins, including synapsins, cysteine string protein (CSP) and rab proteins. The number of proteins containing four transmembrane regions in synaptic vesicles is striking.
Detailed explanation-3: -A neuron may have many thousands of dendrites, but it will have only one axon. The fourth distinct part of a neuron lies at the end of the axon, the axon terminals. These are the structures that contain neurotransmitters.