5.1.4 Neurones

Question 1

What is the dendron?

Answer 1

• Where it sends impulses to cell body.

Question 2

What is the cell body?

Answer 2

• Releases neurotransmitters.

Question 3

What is the axon?

Answer 3

• Sends impulses away from the cell body.

Question 4

What is the myelin sheath?

Answer 4

• Layers of plasma membranes (lipids).

Question 5

What is the role of the schwann cell?

Answer 5

• Producing the myelin sheath.

Question 6

What is the role of the nodes of ranvier?

Answer 6

• Allows the speed of transmission to increase for when the AP jumps from one myelin sheath to the next.

Question 7

Describe the myelin sheath and what is it’s purpose.

Answer 7

• Acts as an insulating layer.
• Speeds up nerve impulse transmission (saltatory conduction) at nodes of ranvier.