What are Neurons and How do they work?

What are the electrical signals sent by neurons called?

• Action potentials

• Chemical signals

• Graded potentials

• Resting potentials

Which part of the neuron receives incoming signals?

• Axon

• Dendrites

• Soma

• Synapse

What does hyperpolarization refer to?

• An increase in positive voltage

• A decrease in negative voltage

• A voltage drop below resting potential

• The resting state of a neuron

What happens during the refractory period of a neuron?

• The neuron can fire again immediately

• The neuron is unable to fire for a short time

• The neuron becomes hyperpolarized

• The neuron transmits signals in both directions

How do myelin sheaths affect signal transmission?

• They slow down the signal

• They speed up the sign

• They have no effect

• They change the signal direction