Question

which of the following is caused by acetylcholine? hyperpolarization of the sinoatrial node depolarization of the atrioventricular node decreased permeability of the sinoatrial node to potassium ions increased heart rate increased permeability of the cardiac muscle to calcium ions

Answer 1

Acetylcholine is responsible for the hyperpolarization of the sinoatrial node.

The definition of hyperpolarization?

At a specific location on the neuron's membrane, hyperpolarization occurs when the membrane potential increases, and depolarization occurs when the membrane potential decreases (more positive).

Explain the membrane of a neuron:

Most activities involved in maintaining and functioning of neurons are started at the neuronal membrane. Membrane-related molecular agents, which interact in protein/lipid clusters to start molecular processing and signal transduction, are required for these processes.

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