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.

Norepinephrine binds to muscarinic receptors.

Epidural anesthesia is introduced to the epidural space between the ________ to block pain signals during pregnancy.