11) The cell body of neurons is generally

A) 90% of the cell volume.

B) 50% of the cell volume.

C) 10% of the cell volume.

D) found in the same position on every neuron.

12) Interneurons are found

A) only in the brain.

B) only in the spinal cord.

C) only in the CNS.

D) throughout the nervous system.

E) only in spinal nerves.

13) The multiple thin, branched structures on a neuron whose main function is to receive incoming signals are the

A) cell bodies.

B) axons.

C) dendrites.

D) somata.

E) None of the answers are correct.

14) The collection of axons that carries information between the central nervous system and the peripheral effectors is called the

A) axon hillock.

B) varicosity.

C) axon.

D) dendrite.

E) nerve.

15) The region where the axon terminal meets its target cell is called the

A) collateral.

B) hillock.

C) synapse.

D) nerve.

E) dendrites.

16) The axon is connected to the cell body by the

A) myelin sheath.

B) axon terminal.

C) collaterals.

D) axon hillock.

E) synapse.

17) Branches that sometimes occur along the length of an axon are called

A) dendrites.

B) axon terminals.

C) collaterals.

D) axon hillocks.

E) synapses.

18) Neurotransmitters are released from the

A) dendrites.

B) axon terminals.

C) collaterals.

D) axon hillock.

E) synapse.

19) The term axonal transport refers to

A) the release of neurotransmitter molecules from the axon.

B) the transport of microtubules to the axon for structural support.

C) vesicle transport of proteins and organelles down the axon.

D) the movement of the axon terminal to synapse with a new postsynaptic cell.

E) None of the answers are correct.

20) Anterograde and retrograde axonal transport are forms of ________ transport.

A) fast

B) slow

C) Neither of these