Acetylcholine causes glycogen breakdown in the liver.

Saltatory conduction allows a nerve signal to travel down the axon by jumping from one node of Ranvier to the next node of Ranvier.

Oligodendrocytes are the most abundant of the glial cells.

Nerve fibers are insulated from one another by ________.

The phrenic nerve emerges from the sacral plexus.

Receptors respond to commands from the effectors.

Norepinephrine binds to muscarinic receptors.

In the brain, gray matter surrounds white matter.

An anticholinergic drug is considered parasympatholytic.

Oligodendrocytes are the most abundant of the glial cells.