Which type of receptor can either be inhibited or excited by the binding of acetylcholine?Multiple choice question.muscarinicnicotinicsympatheticadrenergic

To answer the multiple-choice question regarding which type of receptor can either be inhibited or excited by the binding of acetylcholine, let's analyze the available options:

1. Muscarinic Receptors: These receptors are a type of acetylcholine receptor that are usually found in the parasympathetic nervous system. They can have inhibitory or excitatory effects depending on the specific subtype of muscarinic receptor and the target organ.

2. Nicotinic Receptors: These types of receptors are always excitatory. They are found at the neuromuscular junction and in the autonomic ganglia, where their activation results in muscle contraction or neuronal activation.

3. Sympathetic Adrenergic Receptors: These receptors are primarily involved in the sympathetic nervous system and respond to catecholamines (like norepinephrine) rather than acetylcholine.

Based on this analysis, the receptor type that can be either inhibited or excited by the binding of acetylcholine is:

Final Answer

Muscarinic Receptors.