Motor Neurons Review

Name this structure

• Soma (Cell Body)

• Dendrites

• Axon

• Terminal Buttons

• Myelin Sheath

Answer explanation

The Soma (Cell Body) contains the cell's

nucleus and keeps the cell alive

The_________receives signals from other neurons in the form of neurotransmitters.

• Soma (Cell Body)

• Axon

• Terminal Buttons

• Dendrites

• Myelin Sheath

Once the signal is received, the neuron becomes positively charged and reaches threshold within the ___________.

• Soma (Cell Body)

• Axon

• Terminal Buttons

• Myelin Sheath

Layer of fatty tissue surrounding the axon which insulates and helps to speed up electrical signals.

• Axon

• Myelin Sheath

• Dendrites

• Ions

The ____________ branch toward the end of an axon. It sends signals to other neurons using neurotransmitters.

• Myelin Sheath

• Soma (Cell Body)

• Terminal Buttons

• Axon

The interior of a neuron is negatively charged relative to the area outside of the neuron.

(Polarized -70mV)

• Action Potential

• Threshold

• Ion

• Resting Potential

When an electrical signal is passed from the _________, the neuron's charge changes from negative to positive. This is known as ____________.

(Threshold -55mV)

• Axon, Soma

• Dendrites, Action Potential

• Potassium, Reuptake

• Terminal Buttons, Synapse

Following an action potential, a neuron cannot fire again for a brief time. This stage is known as...

• Threshold

• Neurotransmitter

• Resting Potential

• Refractory Period

Communication WITHIN a neuron is...

• Chemical

• Biological

• Electrical

• Physical

Communication BETWEEN neurons is...

• Chemical

• Electrical

• Physical

• Biological