Nerve Cell

The cell body contains the

• dendrites

• axon terminals

• nucleus and many organelles

• myelin sheath

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

What is identified as letter A?

• Dendrite

• Axon

• Axon Terminal

• Cell Body

What is identified as letter E?

• Cell Body

• Myelin Sheath

• Nucleus

• Axon

Tags

NGSS.MS-LS1-2

The part of the neuron that is protected by the myelin sheath is the

• cell body

• dendrites

• axon

• axon terminals

An electrical impulse within a single neuron is called a

• synapse

• membrane potential

• action potential

• cell body

Depolarization occurs when

• sodium channels open

• potassium channels open

• sodium channels close

• potassium channels close

Which ions are involved in an action potential?

• Na; Cl

• Na; K

• K; Cl

• Na; Ca

When a neuron is not engaged in an impulse.

• Resting potential

• Action potential

• Neural potential

• Synaptic potential

In resting potential, neurons have more _________ on the outside of the cell membrane.

• K+

• NaCl

• Na+

• Cl-