Question

mary accidentally ate poisonous mushrooms that contain muscarine. you would expect to observe all of the following symptoms except

diarrhea.

low blood pressure.

sweating.

very fast heart rate.

salivation.

check answer

Explanation:

Muscarine is a cholinergic agonist. It activates muscarinic receptors. Activation of these receptors in the gastrointestinal tract causes diarrhea (increased gut motility). In the sweat glands, it causes sweating. In the salivary glands, it causes salivation. In the cardiovascular system, activation of muscarinic receptors (specifically in the heart's sino - atrial node) causes bradycardia (slow heart rate) and can lead to low blood pressure (due to vasodilation in some vascular beds). A very fast heart rate (tachycardia) is not a result of muscarinic receptor activation.

Answer:

very fast heart rate.