PHYSIOLOGY
MUSCLE CONTRACTION
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Nerve junction
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Neuromuscular junction
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Muscle junction
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Crossbridge
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Detailed explanation-1: -The neuromuscular junction-where nerves and muscle fibers meet-is an essential synapse for muscle contraction and movement.
Detailed explanation-2: -Synaptic Cleft / Junctional Cleft: The space between the nerve terminal and the plasma membrane of muscle is called synaptic/junctional cleft and measures ∼50 nm.
Detailed explanation-3: -The place where a neuron makes contact with an individual muscle fiber is called a neuromuscular junction. The neuromuscular junction is basically a synapse: the neuron releases a neurotransmitter called acetylcholine (ACh) which binds to receptors on the sarcolemma (the cell wall of the muscle fiber).
Detailed explanation-4: -synapse, also called neuronal junction, the site of transmission of electric nerve impulses between two nerve cells (neurons) or between a neuron and a gland or muscle cell (effector). A synaptic connection between a neuron and a muscle cell is called a neuromuscular junction.