Quiz 13 - Nervous System

Which of the following occurs during absolute refractory period

The neuron cannot generate an action potential.

The central nervous system is composed of

brain and spinal cord

Region of brain that coordinates antagonistic muscle movements

cerebellum

The left and right sides of the cerebellum are interconnected by the

corpus callosum

The receiving end of neurons is called

dendrite

Cells that provide direct protection and physical support to neurons are

neuroglial cells

The levels of ions inside and outside of the cell are maintained by the

sodium and potassium pump

During repolarization of a neuron

sodium channels close and potassium rushes out of the cell to temporarily re-establish the membrane potential

During this process, influx of ________ cause(s) vesicles in the axon bulb to fuse with the cell membrane, relaxing ________

Ca2+, neurotransmitter

The influx of sodium causes a decrease in the polarity of the cell and is called

Depolarization