The movement of which ion is responsible for repolarization of a neuron which has sent an action potential message down the axon? 

Which neuroglial cells in the CNS central nervous system secrete CSF cerebrospinal fluid?

A stimulus causing an electrical change in a neuron, but which does NOT progress to become a nerve signal sending all the way down the axon to the next cell, is called a(n)_________________.

A muscle which assists the prime mover in flexing a joint is called a(n) _____________.

Which of the following choices best describes the proper sequence for a pain withdrawal reflex (somatic reflex arc)?

The ascending tract in the spinal cord which carries sensory information from the upper body (arms, thorax, shoulders) to the cerebral cortex (cerebrum) is the _________________.

Which of the following choices best describes the proper sequence for a pain withdrawal reflex (somatic reflex arc)?

The ascending tract in the spinal cord which carries sensory information from the upper body (arms, thorax, shoulders) to the cerebral cortex (cerebrum) is the _________________.

A man suffers trauma to his cervical plexus.  Of the nerves involved, which nerve(s) would have the most immediate life-threatening impact? 

The name for the connective tissue which surrounds an individual nerve cell is ______________.