Biology - Chapter 8.1 - Outline of the
Nervous System Questions and
Correct Answers 2025-2026 Updated.
What are the main divisions of the nervous system? - Answer Central nervous system and
peripheral nervous system.
What organs belong to the central nervous system? - Answer Brain and spinal cord.
What organs belong to the peripheral nervous system? - Answer The nerves that branch from
the brain and spinal cord (cranial nerves and spinal nerves).
Identify the main parts of a neuron. - Answer Cell body, dendrites and axon.
What is the function of the cell body? - Answer Contains the cell's nucleus and most of the
cytoplasm.
What is the function of the dendrites? - Answer Receives the nerve impulses from other
neurons and conducts them toward the cell body.
What is the function of the axon? - Answer Relays nerve impulses from the cell body to other
neurons.
What is the difference between gray matter and white matter? - Answer *Gray matter*
consists largely of the cell bodies of neurons and is gray because these bodies lack myelin.
*White matter* is composed of axons and glial cells that are white because of their myelin
content.
What are the three broad categories of neurons? - Answer Sensory neurons
Motor neurons
Interneurons
Nervous System Questions and
Correct Answers 2025-2026 Updated.
What are the main divisions of the nervous system? - Answer Central nervous system and
peripheral nervous system.
What organs belong to the central nervous system? - Answer Brain and spinal cord.
What organs belong to the peripheral nervous system? - Answer The nerves that branch from
the brain and spinal cord (cranial nerves and spinal nerves).
Identify the main parts of a neuron. - Answer Cell body, dendrites and axon.
What is the function of the cell body? - Answer Contains the cell's nucleus and most of the
cytoplasm.
What is the function of the dendrites? - Answer Receives the nerve impulses from other
neurons and conducts them toward the cell body.
What is the function of the axon? - Answer Relays nerve impulses from the cell body to other
neurons.
What is the difference between gray matter and white matter? - Answer *Gray matter*
consists largely of the cell bodies of neurons and is gray because these bodies lack myelin.
*White matter* is composed of axons and glial cells that are white because of their myelin
content.
What are the three broad categories of neurons? - Answer Sensory neurons
Motor neurons
Interneurons
