Nicotinic cholinergic receptors

The video tutorial by Dr. Morton explains nicotinic receptors, a type of cholinergic receptor that binds acetylcholine. Nicotinic receptors are ligand-gated ion channels that allow sodium influx, causing depolarization and action potential initiation. There are two types: NM receptors, found in skeletal muscles, and NN receptors, located in autonomic ganglia and the adrenal medulla. NM receptors facilitate muscle contraction, while NN receptors are involved in autonomic nervous system signaling. The tutorial also discusses myasthenia gravis, a condition affecting NM receptors.

What is myasthenia gravis and how does it affect nicotinic receptors?

How do NN receptors function in the autonomic nervous system?

Discuss the locations of NN receptors in the body.