Acetylcholine

What is acetylcholine?

A neurotransmitter in the CNS and PNS.

Is acetylcholine found in the CNS, PNS, or both.

Both

What are the major CNS functions of acetylcholine?

Attention, memory, arousal, and learning..

What does acetylcholine do at the neuromuscular junction?

It causes skeletal muslce contraction.

Which branch of the autonomic nervous system is ACh important?

The parasympathetic nervous system.

What are the two types of acetylcholine receptors?

Nicotinic and muscarinic.

Which ACh receptor is inonotropic?

Nicotinic.

Which ACh receptor is metabotropic?

Muscarinic.

Are nicotinic receptors fast or slow?

Fast.

Are muscarinic receptors fast or slow?

Slow.

Is acetylcholine excitatory or inhibitory?

It depends on the receptor type.

Why are nicotinic receptors usually excitatory?

They open sodium channels.

What enzyme breaks down acetylcholine?

Acetylcholinesterase (AChE)