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 ________.

Norepinephrine binds to muscarinic receptors.

Receptors respond to commands from the effectors.

The phrenic nerve emerges from the sacral plexus.

An anticholinergic drug is considered parasympatholytic.

During an action potential, Sodium exits the cell causing the membrane potential to become more negative.

Oligodendrocytes are the most abundant of the glial cells.