Neurons

Question 1

Define a neuron

Answer 1

A cell within the nervous system that transmits neural impulses to and from the brain with various functions

Question 2

Define a dendrite

Answer 2

An extension of a neuron that detects and receives information from other neurons; dendrites pass information to the neurons soma (cell body) where it is integrated and transmitted along the axon

Question 3

Define an axon

Answer 3

A single, tube like extension that transmits neural information to other neurons (or cells in muscles and glands)

Question 4

Define myelin

Answer 4

A white, fatty substance that surrounds and insulates the axon, protecting it and allows for rapid movement of neural impulses

Question 5

Define a axon terminal

Answer 5

The small brackets on the end of a neuron that includes the terminal buttons

Question 6

What is a terminal buttons function

Answer 6

It stores and secrets a neuron transmitter that the neurons creates

Question 7

Define neural transmission

Answer 7

One neuron passing a neural impulse to another neuron

Question 8

Define a neural impulse

Answer 8

Tiny pulses of electric or chemical energy

Question 9

When is it a action potential?

Answer 9

When they pass through the neuron itself

Question 10

When is it chemical?

Answer 10

When they pass between neurons

Question 11

Name all of the parts of a typical neuron

Answer 11

• Dendrites & dendrite spines
• Nucleus
• soma
• myelin sheath
• axon
• nodes of Ranvier
• terminal buttons
• axon terminals