Neurons

Question 1

What type of neurons support cells that do not transmit signals?

Answer 1

Neuroglia

Question 2

What cells maintain K+ Levlels and reuptake of neurotransmitters?

Answer 2

Neuroglia

Question 3

Resting membrane potential is what?

Answer 3

-70

Question 4

In an action potential, what molecule goes into the cell and what goes out?

Answer 4

Na+ in, K+ out

Question 5

Conduction velocity is proportional to:

Answer 5

Axon diameter

Largest is fastest

Question 6

3 Types of Nerve Fibers - and what are they?

Answer 6

A Fibers - myelinated, fast
B Fibers -small, myelinated
C Fibers - smallest, unmyelinated

Question 7

4 types of A fibers

Answer 7

Alpha
Beta
Gamma
Delta

Question 8

What type of nerve fiber is unmyelinated?

Answer 8

C Fibers

Question 9

Alpha Fiber controls:

Answer 9

Proprioception, somatic motor

Question 10

Beta Fibers control:

Answer 10

Touch and pressure

Question 11

Gamma Fibers control

Answer 11

Motor to muscle spindles

Question 12

Delta Fibers control

Answer 12

Pain, Temperature, Touch

Question 13

What type of fibers are preganglionic autonomic fibers?

Answer 13

B Fibers

Question 14

What are the 2 types of unmyelinated C Fibers?

Answer 14

Dorsal Root Fibers - Pain/Reflex

Sympathetic - Postganglionic