Question

Applying ACh to the small intestine will cause a smooth muscle ______, which is through activation of ______ receptors.

Answer 1

The correct answer is - Excitation; and Gi receptors.

Step-by-step explanation:

ACh or acetylcholine is a secondary messenger that cause excitation by propagate the signal to the muscles from neurons. It is helps in transport the signal from the motor neurons to the muscles.

ACh release from the parasympathetic neurons and can directly excitation to the smooth muscle by binding to the Gi receptors or muscarinic receptors and activate them for excitation and contraction.

Thus, the correct answer is - Excitation; and Gi receptors.