Question

select all that apply

which neurotransmitters affect cardiac muscle?

peristalsis

norepinephrine

acetylcholinesterase

acetylcholine

Explanation:

Identify the target question

The question asks to select all neurotransmitters that affect cardiac muscle from the given list.

Analyze the options

• Peristalsis: This is a wave-like muscle contraction process in the digestive tract, not a neurotransmitter.
• Norepinephrine: This is a key catecholamine neurotransmitter released by the sympathetic nervous system that increases heart rate and contractility.
• Acetylcholinesterase: This is an enzyme that breaks down acetylcholine, not a neurotransmitter itself.
• Acetylcholine:

Using the Acetylcholine knowledge point
This is a neurotransmitter released by the parasympathetic nervous system (via the vagus nerve) that decreases heart rate.

Select the correct neurotransmitters

Both norepinephrine and acetylcholine are neurotransmitters that directly regulate cardiac muscle function.

Answer:

• Peristalsis
• Norepinephrine (Correct answer)
• Acetylcholinesterase
• Acetylcholine (Correct answer)