The Neuron - Unit 1 Quiz

The function of a neuron is -

• To store information in the brain.
• To produce hormones for the body.
• To transmit information through electrical and chemical signals.
• To provide structural support to tissues.

The job of an axon in a neuron is -

• to transmit electrical impulses away from the neuron's cell body
• to receive signals from other neurons
• to protect the neuron's cell body
• to store neurotransmitters for later use

The role of the myelin sheath is -

• To insulate axons and increase the speed of nerve impulse transmission.
• To connect different parts of the nervous system.
• To store neurotransmitters for later use.
• To protect the brain from injury.

Glial cells in neurons are supposed to -

• Regenerate damaged neurons.
• Support and protect neurons.
• Transmit electrical signals between neurons.
• Provide energy to neurons.

The purpose of dendrites in nerve cells is to -

• protect the cell body from damage
• store genetic information
• receive signals from other neurons
• transmit signals to other neurons

Label the parts of the blank neuron correctly

a

b

c

d

e

f

axon

axon terminals

soma

myelin sheath

dendrites

nucleus

The electrical charge that a neuron sends is called -

• neurotransmitter
• action potential
• dendritic signal
• synaptic impulse

The minimum "intensity" needed to trigger an action impulse.

True or False: Neurons connect directly at the synapse or receptor sites.

• True

• False

Reuptake can be best described as -

• the breakdown of neurotransmitters by enzymes.
• the reabsorption of neurotransmitters by the presynaptic neuron.
• the release of neurotransmitters into the synaptic cleft.
• the binding of neurotransmitters to postsynaptic receptors.