Ashley Overview of Nervous System Test 1

The depolarization phase of an action potential is caused by:

• Na+ rushing into the axon
• K+ rushing out of the axon
• Ca++ rushing into the axon
• Activation of Na/K pumps

Tags

NGSS.HS-PS2-5

Na/K Pumps are most active during which phase of Action Potential events?

• Hyperpolarization
• Depolarization
• Repolarization
• Resting Membrane Potential

Which event characterizes repolarization?

• Na+ rushing into the axon
• K+ rushing out of the axon
• Ca++ rushing into the axon
• Activation of Na/K pumps

part of autonomic nervous, calms you down

• Parasympathetic 
• sympathetic 

electric charge on the inside and the outside of the cell membrane and is when the cell becomes positively charged

• polarization
• depolarization

When a neuron is depolarized, what are the first channels to open?

• Sodium
• Potassium
• Calcium
• ACTH

What number(s) on the graph represents the Resting Potential?

• 1 and 2
• 1 and 5
• 2 and 3
• 3 and 4

a junction at which a neuron meets another cell

• axon
• dendrites
• myelin sheath
• synapse

Which ions are involved in the electrical nerve impulse?

• Iodine and Sodium
• Potassium and Sodium
• Iron and Sodium
• Calcium and Iodine

Tags

NGSS.HS-PS1-3

What number on the graph represents the Depolarization phase?

• 1
• 2
• 3
• 4