PHYSIOLOGY
MUSCLE CONTRACTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Where are acetylcholine receptors located?
|
|
Sarcoplasmic Reticulum
|
|
|
Sarcoplasm
|
|
|
Sarcolemma
|
|
|
Sarcasm
|
Explanation:
Detailed explanation-1: -Embedded in the sarcolemma (= fiber membrane) at the neuromuscular junction are (nicotinic) receptors for acetylcholine (ACh). This is the neurotransmitter that is released by the terminal branches of a motor neuron.
Detailed explanation-2: -Acetylcholine receptors (also called cholinergic receptors) appear in clusters on muscle-cell membranes opposite the active zones of presynaptic terminals. Their density at these receptor regions is between 7, 000 and 30, 000 sites per square micrometre (micron; millionth of a metre).
There is 1 question to complete.