Acetylcholine. ACh

The video tutorial by Dr. Morton covers the neurotransmitter acetylcholine, detailing its synthesis, storage, release, and inactivation. It explains the roles of choline acetyltransferase in synthesis, vesicular transporters in storage, and calcium channels in release. The tutorial also discusses cholinergic receptors, including nicotinic and muscarinic types, and the role of acetylcholinesterase in inactivation. Clinical correlations, such as the effects of drugs and toxins on acetylcholine processes, are highlighted.

Which neurotransmitter is released by all parasympathetic neurons?

• Norepinephrine

• Acetylcholine

• Serotonin

• Dopamine

What enzyme is responsible for the synthesis of acetylcholine?

• Choline acetyltransferase

• Acetylcholinesterase

• Monoamine oxidase

• Dopamine beta-hydroxylase

What is the role of Hemicholinium in acetylcholine synthesis?

• It inhibits acetylcholinesterase

• It blocks the choline transporter

• It enhances acetylcholine synthesis

• It increases vesicular storage

What protein is responsible for transporting acetylcholine into vesicles?

• Calcium channel

• Vesicular acetylcholine transporter

• Choline acetyltransferase

• SNARE protein

What effect does Vesamicol have on acetylcholine storage?

• It blocks vesicular acetylcholine transporter

• It inhibits acetylcholinesterase

• It enhances vesicular storage

• It increases acetylcholine synthesis

What triggers the release of acetylcholine from the neuron?

• Influx of sodium ions

• Influx of calcium ions

• Efflux of potassium ions

• Efflux of chloride ions

Which condition is associated with antibodies blocking calcium channels?

• Myasthenia Gravis

• Parkinson's Disease

• Lambert-Eaton Myasthenic Syndrome

• Botulism

What is the primary function of acetylcholinesterase?

• To degrade acetylcholine

• To store acetylcholine in vesicles

• To transport acetylcholine across membranes

• To synthesize acetylcholine

Which receptors are activated by acetylcholine?

• Serotonergic receptors

• Nicotinic and muscarinic receptors

• Dopaminergic receptors

• Adrenergic receptors

What is the effect of acetylcholinesterase inhibitors?

• They decrease acetylcholine levels

• They increase acetylcholine breakdown

• They increase acetylcholine accumulation

• They block acetylcholine synthesis