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.

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

Norepinephrine binds to muscarinic receptors.

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

Which of the following occurs during an action potential? (efflux=out; influx=in)1. Na+ efflux, 2. Na+ influx, 3. K+ influx, 4. K+ efflux, 5. depolarization