1
Q
What is a nerve impulse?
A
propagation of action potentials along a nerve axon
2
Q
How does axon size affect the speed of an impulse?
A
the speed of an impulse is proportionate to the size of axon, greater diameter = faster impulse
3
Q
Do myelinated or unmyelinated axons conduct impulses faster?
A
myelinated
4
Q
What happens to the signal when myelin is damaged?
A
impulses will slow down, be disrupted, or never get to their destination
5
Q
What is the synapse?
A
junction between two communicated neurons
6
Q
What is the nerve pathway?
A
the nerve impulse travels from neuron to neuron (dendrite → cell body → axon → synapse)
The Nervous System
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