Nervous System Part 2

Question 1

Usual stimuli for nerve impulse

Answer 1

Pressure, temperature, and chemical

Question 2

Depolarization

Answer 2

Process in which inside of the membrane temporarily becomes positive and the outside becomes negative.

Question 3

Saltatory conduction

Answer 3

When traveling impulse reaches section of membrane insulated with myelin, it “jumps” the gaps

Question 4

Presynaptics neuron vs post synaptic neuron

Answer 4

Pre has the impulse and then transfers the signal at synapse to a new one.

Question 5

Synaptic knob

Answer 5

A tiny bulge at the end of a terminal branch of a presumptive neuron’s axon

Question 6

Synaptic cleft

Answer 6

Space between a knob and the plasma membrane of a post synaptic neuron

Question 7

Neurotransmitters

Answer 7

Chemicals by which neuron’s communicate.

Question 8

Endorphins and enkephalins

Answer 8

Morphinelike neurotransmitters

Question 9

NO

Answer 9

Diffuses directly across the plasm membrane of neuron’s rather than being released from Vessicles.

Question 10

Nerve impulse

Answer 10

Self propagating wave of electrical disturbance that travels along the surface of a neuron’s plasma membrane.