Neurons and Their Functions

Front

______ are the most numerous type of neuron in the CNS.

Back

Interneurons

Front

Branches that may occur along an axon are called

Back

Collaterals

Front

Sensory neurons of the PNS are

Back

Unipolar

Front

The plasma membrane of an axon is called the

Back

Axolemma

Front

_______ monitor the position of skeletal muscles and joints.

Back

Proprioceptors

Front

Most neurons lack _______ and so are permanently blocked from undergoing cell division.

Back

centrioles

Front

The part of the peripheral nervous system that carries sensory information to the CNS is designated

Back

afferent.

Front

Graded potentials

Back

may be either a depolarization or a hyperpolarization.

Front

When potassium channels open and the ions diffuse through the membrane,

Back

the inside of the membrane will become more negative.

Front

The period during which an excitable membrane cannot respond to further stimulation is the _______ period.

Back

absolute refractory