MUSCLE PHYSIOLOGY

PHYSIOLOGY

MUSCLE CONTRACTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the name of the place where a nerve meets a muscle fiber
A
Nerve junction
B
Neuromuscular junction
C
Muscle junction
D
Crossbridge
Explanation: 

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.

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