MICROANATOMY

Detailed explanation-1: -Acetylcholine is the neurotransmitter used at the neuromuscular junction-in other words, it is the chemical that motor neurons of the nervous system release in order to activate muscles.

Detailed explanation-2: -However, through the nicotinic cholinergic receptors, acetylcholine allows for skeletal muscle contraction; in the adrenal glands, the release of adrenaline and norepinephrine; and in the peripheral sympathetic ganglia, activation of the sympathetic system with the release of norepinephrine.

Detailed explanation-3: -Muscle contraction is controlled by receptors in the muscle cell membranes that respond to the neurotransmitter acetylcholine when it is released from motor neurons.

Detailed explanation-4: -Acetylcholine is a type of chemical messenger or neurotransmitter that plays a vital role in the central and peripheral nervous systems. It is important for muscle control and autonomic body functions, also impacting learning, memory, and attention.