Neurons

Question 1

What are nerones?

Answer 1

nerve cells specialisted to move electrical impulses to and from the CNS

Question 2

What makes up the structure of the neuron?

Answer 2

• the cell body ( stoma)
• nucleus
• dendron
• axon
• axon terminal
• nodes of ravier

Question 3

What are dendrons and their function?

Answer 3

• they are branch like structures that some off the cell body
• it carries nerve impulses towards the cell body

Question 4

What is the node of ranvier and it’s function?

Answer 4

• gaps that separate mylein sheath
• makes sure the myelin sheath isn’t continuous as it could slow down electrical impulses
• it does this by making the impulses jump along the axon

Question 5

What are axons and their function?

Answer 5

• they are single long fibres
• they carry nerve impulses away from the cell body

Question 6

What is the stoma?

Answer 6

• the cell body, which contains the nucleus
• and is the control centre of a neuron

Question 6

What is the myelin sheath and their function?

Answer 6

• they are an insulated membrane of the cells that make up the axon (schwann cells)
• they allow impulses to be transmitted faster along the axon

Question 7

What are the types of neurons?

Answer 7

• sensory
• motor
• relay