Exam 9: Nervous System

During an action potential, what occurs that results in repolarization?

An action potential is an all-or-none response.

What is the correct sequence of the parts of a reflex arc?

Neurons that release acetylcholine are __________ neurons; those that secrete norepinephrine are __________ neurons.

Which of the following are adrenergic fibers?

Which of the following axons would have the slowest conduction speed?

Pulling your hand away from a hot pot is an example of what type of reflex?

What are the two major cell types found in nervous tissue?

What are the gaps in the myelin sheath called?

Masses of myelinated nerve fibers appear as what color in the central nervous system?

What is the function of the basal nuclei?

Sympathetic tone is defined as ongoing stimulation of smooth muscles in the walls of blood vessels, which results in partial constriction.

Cell bodies of motor neurons are located in the anterior horns of the spinal cord.

What part of a neuron originates as a single structure but may give off many branches?

The innermost layer of the meninges is the __________ mater.

If a patient was unable to feel the right side of the face, what cranial nerve might be damaged?

Neurotransmitters that hyperpolarize post-synaptic membranes are always __________.

Impulse conduction is __________ in myelinated nerve fibers.

What structural type of neuron has a single process that extends from the cell body?

What is the structure called that is a branch-like sensory process of a neuron that provides the main receptive surface for communication?