MUSCLE PHYSIOLOGY

PHYSIOLOGY

MUSCLE CONTRACTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What three structures make up the neuromuscular junction?
A
muscle fiber, acetylcholine, vesicles
B
motor neuron, motor end plate, acetylcholine
C
synaptic cleft, motor neuron, sarcolemma
D
motor neuron, motor end plate, synaptic cleft
Explanation: 

Detailed explanation-1: -For convenience and understanding, the structure of NMJ can be divided into three main parts: a presynaptic part (nerve terminal), the postsynaptic part (motor endplate), and an area between the nerve terminal and motor endplate (synaptic cleft).

Detailed explanation-2: -The neuromuscular junction is composed of three major structures. The presynaptic vesicles, the synaptic cleft, sometimes called the synaptic junction, and the postsynaptic membrane of the skeletal muscle cell containing neurotransmitter receptors.

Detailed explanation-3: -The neuromuscular system includes all the muscles in the body and the nerves serving them. Every movement the body makes requires communication between the brain and the muscles. The nervous system provides the link between thoughts and actions by relaying messages from the brain to other parts of the body.

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