Neurons (Unit 2)

Question 1

receives messages from other cells

Answer 1

Dendrites

Question 2

passes messages away from cell body to other neurons, muscles or gland

Answer 2

Axon

Question 3

covers the axon of some neurons and helps speed neural impulses

Answer 3

Myelin Sheath

Question 4

form junctions with other cells

Answer 4

Axon Ternimals

Question 5

action potential, electrical signal traveling down the axon

Answer 5

Neural Impulse

Question 6

A neural impulse; a brief electrical charge that travels down the axon of a neuron

Answer 6

Action Potential

Question 7

a brief recharging phase, when a neuron, after firing, cannot generate another action potential

Answer 7

Refractory Period

Question 8

The state of a neuron when it is at rest and capable of generating an action potential

Answer 8

Resting Potential

Question 9

stating that if a neuron fires, then it always fires at the same intensity; all action potentials have the same strength

Answer 9

All or None Principle