Communication within & between neurons part 2

What maintains "equilibrium potential" in a resting neuron?

• electrostatic pressure & diffusion
• Diffusion only
• endocytosis
• exocytosis

What number on the graph represents the Depolarization phase?

• 1
• 2
• 3
• 4

What number on the graph represents the Hyperpolarization phase?

• 1
• 2
• 3
• 4

What is the insulating membrane that surrounds parts of the axon that helps to protect & propagate action potential?

• Axon
• Dendrites
• Node of Ranvier
• Myelin Sheath

a signal molecule that transmits nerve impulses across synapses

• neuron
• neurotransmitter
• nerve
• action potential

nerve impulse

• action potential
• resting potential
• membrane potential
• synapse

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

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

-70 mV is the measure of a

• Threshold Potential
• Action Potential
• Resting Potential
• End Point Potential

Tags

NGSS.HS-PS2-5

A membrane potential becoming less negative is called

• hyperpolarization
• depolarization
• repolarization
• polarization

The nerve cell extension that is longer and sends information is called a(n)

• neuron
• cell body
• axon
• dendrite