Action Potential

Question 1

Action Potential

Answer 1

Electrical signal that is carried down a neuron through its axon and passed to a neighboring neuron.

Question 2

How is action potential generated?

Answer 2

Through a sudden reverse of charge.

Question 3

What do proteins make up?

Answer 3

Channels & Pumps

Question 4

What’s essential for nerve function?

Answer 4

The distribution of ions across the cell membrane.

Question 5

What must happen in order for an ion to exit or enter the cell?

Answer 5

Ions must pass through a membrane or pump.

Question 6

The six types of ions inside the cell that cannot leave?

Answer 6

• Phosphates
• Sulfates
• Organic Acids
• Proteins
• ATP
• RNA

Question 7

Neurons can be stimulated by?

Answer 7

• Chemicals
• Light
• Heat
• Mechanical distortion of the membrane

Question 8

Five steps of action potential?

Answer 8

1) Resting Potential
2) Depolarization
3) Action Potential
4) Repolarization
5) Hyperpolarization

Question 9

How much energy from the body does it take to complete action potential?

Answer 9

• 70% of the energy requirementss of the nervous system.
• 1/3 of the body’s total energy.

Question 10

Central Branch function?

Answer 10

transmits sensory signals toward the central nervous system.

Question 11

Peripheral Branch function?

Answer 11

recieves information from sensory receptors.

Question 12

Multipolar Neuron (axon & dendrites)

Answer 12

1 Axon – Many Dendrites

Question 13

Bipolar Neuron (axon & dendrites)

Answer 13

1 Axon – 1 Dendrite

Question 14

Unipolar Neuron (axon & dendrites)

Answer 14

1 Axon – 0 Dendrites