Action Potentials

Question 1

What cell is the myelin sheath made of

Answer 1

Schwann cells

Question 2

Speed if conduction in an unmylinated neurone

Answer 2

0.5m/s

Question 3

Myelin sheath increase speed of transmission up to

Answer 3

100m/s

Question 4

What is it cooled when action potentials jump from one node of ranvier to the next

Answer 4

Saltatory conduction

Question 5

How does thickness of axons affect transmission speed

Answer 5

Thicke axons transmit impulses faster than thin ones as their resistance to the flow of ions is less. In small axons organelles makes less space for ions