Na+ ions are not able to diffuse directly through the phospholipid bilayer without a channel because they are charged.

The vagus nerve is represented by which number?

The part of a neuron that contains the nucleus is known as the:

Which tissue is avascular (lacks blood vessels)?

The only saddle joint in the body is found in the: 

A membrane is hyperpolarized at what membrane potential?

Put the steps for signaling muscle contraction in the correct order:

Jared was thrown from a car in an automobile accident and broke his back.  He has no sensation from the mid-thigh down due to spinal cord damage.  Based on the dermatome map, which area of Jared’s spinal cord was damaged in the accident?

The cell in the picture below is hypertonic to its environment.

Myelinated axons transmit electrical impulses faster than nonmyelinated axons