Nervous System Overview

Which of the following is a major organ of the nervous system?

• Heart

• Brain

• Liver

• Kidney

Which part of the nervous system consists of the brain and spinal cord?

• Peripheral nervous system

• Central nervous system

• Autonomic nervous system

• Somatic nervous system

The peripheral nervous system consists of ________ .

• Cranial

• Spinal cord

• Both cranial and spinal

• nerves that originate in the brain and spinal cord

The space between two neurons is called the ________.

• A) Synapse

• B) Synaptic cleft

• C) Axon

• D) Dendrite

The resting potential is when the intracellular space is ________ charged.

• Positively

• Negatively

• Neutrally

• Not

What is the role of neurotransmitters in the synaptic cleft?

• To digest food

• To transmit impulses

• To circulate blood

• To store energy

Neuroglia are also known as "______".

• A) nerve-glue

• B) nerve-cells

• C) nerve-fibers

• D) nerve-tissues

The cell body of a neuron contains the nucleus, cytoplasm, and ______.

• A) axons

• B) dendrites

• C) organelles

• D) terminals

What do axon terminals release to pass impulses to the next neuron?

• Hormones

• Neurotransmitters

• Enzymes

• Proteins

Neurons have different structures, but all have a main cell body with ______ extending outward.

• axons

• processes

• terminals

• synapses