If a cell has muscarinic cholinergic receptors, you know it is NOT a. smooth muscle. b....

If a cell has muscarinic cholinergic receptors, you know it is NOT

a. smooth muscle.

b. skeletal muscle.

c. an endocrine gland.

d. cardiac muscle.

e. an adipose cell

Solutions

Expert Solution

b) skeletal muscle

Autonomic Nervous system is mainly divided into two main divisions as sympathetic and parasympathetic divisions. The sympathetic nervous system has sympathetic or adrenergic receptors - which include 1 alpha and 2 beta-receptors. The parasympathetic nervous system has parasympathetic or cholinergic receptors. These cholinergic receptors are mainly of two types- muscarinic and nicotinic receptors. Atropine inhibits the action of Ach by blocking muscarinic receptors. As the autonomic nervous system is connected with supplying information to cardiac and smooth muscles, a and d are not answer. Muscarinic receptors are present in endocrine glands, for eg; At pancreas islets, it increases secretion of both insulin and glucagon. So c is also not an answer. At cardiac cells, they decrease conduction. They are also present in adipose tissue, in where they cause lipolysis and regulates the glucose level.

Somatic nervous system is involved in regulating skeletal muscles. So no cholinergic receptors are seen.

Sydney Mullin answered 11 months ago

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