Acetylcholine

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Only in the central nervous system
In all organs innervated by the parasympathetic and sympathetic nervous system (correct)
In the adrenal medulla
In the neuromuscular junction

It is broken down by acetylcholinesterase
75% is taken back up and recycled by the norepinephrine transporter (NET) (correct)
It is transported back into the nerve for recycling
It is primarily used for the synthesis of acetylcholine

Stimulation of ganglia, skeletal muscle, and release of adrenaline and noradrenaline from adrenal medulla (C) Signup and view all the answers

Taken out as a whole molecule or broken down by acetylcholinesterase to choline and acetic acid (D) Signup and view all the answers

Tyrosine hydroxylase (C) Signup and view all the answers

Central nervous system (C) Signup and view all the answers

By monoamine oxidase (MAO) and catechol-O-methyltransferase (COMT) (D) Signup and view all the answers

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Acetylcholine is a neurotransmitter that plays a crucial role in various physiological processes.

Muscarinic receptors are found in the parasympathetic nervous system, smooth muscle, and exocrine glands.

The primary fate of released noradrenaline is reuptake by the neuron, where it can be recycled or broken down.

The primary function of nicotinic receptors is to regulate rapid synaptic transmission.

The primary fate of released acetylcholine is breakdown by the enzyme acetylcholinesterase.

The enzyme responsible for the synthesis of noradrenaline from tyrosine is dopamine β-hydroxylase.

The rest of the released noradrenaline not taken back up for recycling is broken down by the enzyme monoamine oxidase or catechol-O-methyltransferase.