Neurons

Question 1

The Spinal Cord is..?

Answer 1

A “super highway” for all information/messages going to and leaving the brain.

Question 2

What is a neuron?

Answer 2

A cell that sends and receives information in the form of a neural impulses (electrochemical energy).

Question 3

What are the different types of neurons?

Answer 3

• Sensory.
• Motor.
• Interneurons.

Question 4

Sensory Neurons.

Answer 4

Part of Somatic nervous system.

Afferent - sends messages to the central nervous system from our sensory organs, such as the eye.

Question 5

Motor Neurons.

Answer 5

Part of Somatic nervous system

Efferent - sends messages from the central nervous system to the body (muscles or glands).

Question 6

Interneurons.

Answer 6

Located in the central nervous system.

Relays messages from sensory neuron to motor neuron. - known as the link between sensory and motor neurons.

Question 7

What are the different parts of a neuron?

Answer 7

• Dendrites.
• Cell body (soma).
• Nucleus
• Axon.
• Myelin Sheath
• Axon terminals.
• Synapse

Question 8

Dentrites

Answer 8

• Receives neural messages before sending it to the cell body and forms neurotransmitters.

Question 9

Soma

Answer 9

• The cell body, responsible for maintenance of the of the cell.
• ## Combines neural information and sends it to the axon.

Question 10

Nucleus

Answer 10

• Has biochemical info to keep neuron functioning.

Question 11

Axon.

Answer 11

Transmits messages from the Soma to other cells in the body.

Question 12

Myelin Sheath.

Answer 12

• A white, fatty covering that insulates the axon.

- Protects messages from interference.

Question 13

Axon terminal.

Answer 13

• end of the axon is the axon terminal, it releases messages into synapses.

Question 14

Synapses.

Answer 14

• transmission site of electric nerve impulses between 2 neurons.

Question 15

Glial Cells.

Answer 15

• Provides insulation and nutrients.
• Aid in repairing and eliminating waste.
• Neurons can’t function without Glial Cells.