Neurons and Action Potentials

What contains the nucleus of the neuron?

• Terminal Bouton

• Cell Body

• Axon Hillock

• Myelin Sheath

Tags

NGSS.MS-LS1-2

This structure receives messages from the terminal bouton of a presynaptic neuron

• Axon

• Dendrite

• Cell Body

• Axon Hillock

Schwann Cells create this in the PNS; Oligodendrocytes create this in the CNS

• Neurotransmitters

• Myelin Sheath

• the reuptake process

• Down Regulation

These are chemical substances that breaks down a neurotransmitter so that the post synaptic neuron can depolarize in order to fire again

• Enzyme

• Protein

• Astrocyte

• Myelin

What is the brief electrical impulse that provides the basis for conduction of nerve signals along the axon?

• Post synaptic potential

• Membrane potential

• Action potential

• Resting potential

The part of the neuron that receives incoming messages is the

• dendrite

• axon

• cell body

• axon terminal

When a neuron is at REST,

• the inside of the neuron is negatively charged compared to the outside.

• the inside of the neuron is positively charged compared to the outside.

• there is no charge difference established

• none of these is true

Depolarization occurs when

• sodium channels open

• potassium channels open

• sodium channels close

• potassium channels close

What maintains the resting membrane potential in a neuron?

• sodium-potassium pumps

• sodium channels

• potassium channels

• gravity

Tags

NGSS.MS-LS1-2

The area of the neuron that transmits an impulse

• dendrite
• axon
• cell body
• nucleus