FINAL-PRACTICE QUIZ

The ________ nervous system is composed of the brain and spinal cord.

• efferent

• afferent

• peripheral

• autonomic

• central

The basic functional unit of the nervous system is the

• brain

• neuron

• glial cell

• spinal cord

• nerve

The plasma membrane of an axon is called the

• axoplasm

• axokaryon

• axon terminal

• axolemma

• axon hillock

Identify the structures labeled '5.'

• synaptic terminals

• axons

• axosomata

• telodendria

• dendritic spines

The myelin sheath that covers many CNS axons is formed by

• satellite cells

• microglia

• astrocytes

• ependymal cells

• oligodendrocytes

The tiny gaps between adjacent Schwann cells are called

• gap junctions

• internodes

• myelinated

• nodes

• synapses

The separation of plus and negative charges across the membrane creates a ________ difference, or voltage.

• potential

• concentration

• gradient

• kinetic

• graded

Which point of the graph shows when potassium ion outflow exceeds sodium ion inflow?

• 1

• 2

• 3

• 4

Define resting membrane potential. (Module 11.7A)

• Resting membrane potential is the resting speed a cell can propagate electrical impulses.

• Resting membrane potential is a temporary, localized change in the potential of a cell.

• Resting membrane potential is the membrane potential of an unstimulated cell.

• Resting membrane potential is the minimum ability of a cell to generate electrical
  impulses

• Resting membrane potential is the change in charge across the inner and outer membrane
  of a cell

Which of the following lies between the cerebrum and the brainstem?

• pons

• medulla oblongata

• midbrain

• cerebellum

• diencephalon