Hbs 2.2

Using the image above, what part of the action potential is occurring at #3

• sodium is rushing into the cell

• sodium channels are closing and potassium is rushing out of the cell

• the Na+/K+ is actively working

Which number on the diagram above represents the threshold stimulus?

• #1

• #2

• #5

Using the image and the word bank above, identify the structure labelled #8

Tags

NGSS.MS-LS1-3

At which # on the image below is K+ travelling out of the cell?

• #2

• #3

• #4

a junction at which a neuron meets another cell

• axon

• dendrites

• myelin sheath

• synapse

When a neuron is resting, the inside of the axon has a ____________ charge.

• -55 mV

• -70 mV

• 40 mV

• -75 mV

Why is -55 mV a significant number?

• This is the largest charge achieved during an action potential

• This is the threshold required to complete an action potential

• This is the resting charge of a neuron

• This is the charge when all the sodium is inside the cell

Using the image above, what part of the action potential is occurring at #3

• depolarization

• repolarization

• hyperpolarization

Motor neurons carry impulses __________ the brain

• towards

• away from

• within

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

• 1 and 2

• 1 and 5

• 2 and 3

• 3 and 4