Nervous System

Which is the correct sequence in the transmission of a neural impulse?

• axon, dendrite, cell body, synapse
• dendrite, axon, cell body, synapse
• synapse, axon, dendrite, cell body
• dendrite, cell body, axon, synapse

Multiple sclerosis is an autoimmune disease in which the body's own immune system destroys the _____________ of the nerve axons. 

• Myelin
• Dendrites
• Axon Terminal
• Nodes of Ranvier

An axon conducts nerve impulses _________ the cell body.

• away from
• toward
• both toward and away
• around, bypassing

The brain's supporting cells are called: 

• glial cells
• mitochondria
• neurons
• nuclei

Neurons that travel toward the central nervous system are called

• afferent neurons
• efferent neurons
• exit neurons
• CNS neurons

The gap that a message has to cross to get from one neuron to the other is called the _____

• synapse
• dendrite
• axon
• synaptic cleft

What part of the neuron is myelinated?

• Cell Body
• Axon
• Synapse
• Dendrite

The spaces between the covered parts of an axon are called:  

• synaptic clefts
• nodes of Ranvier
• Ventricles
• Vesicles

What is the nerve impulse in the axon called?

• action potential
• resting potential
• membrane potential
• synapse

An unmyelinated axon, dendrite, and cell body are also known as

• white matter
• grey matter
• glia
• astrocytes