CVHS A&P Peripheral Nervous System Test

Front

What does the neuron's Myelin Sheath do?

Back

Surrounds and insulates the axon.

Front

What are the main functions of the nervous system?

Back

Receives information about the body and surroundings, tells the body how to react, and helps maintain homeostasis.

Front

Name the two divisions of the Autonomic Nervous System (ANS).

Back

Sympathetic and Parasympathetic.

Front

What is the fatty substance produced by glial cells that insulates the axons of some neurons?

Back

Myelin.

Front

What is the primary function of the Sympathetic division of the ANS?

Back

Prepares the body for 'fight or flight' responses.

Front

What is the primary function of the Parasympathetic division of the ANS?

Back

Promotes 'rest and digest' activities.

Front

What are Nodes of Ranvier?

Back

Gaps in the myelin sheath that facilitate rapid conduction of nerve impulses.

Front

What is the role of glial cells in the nervous system?

Back

Support, nourish, and protect neurons.

Front

What is homeostasis?

Back

The maintenance of a stable internal environment in the body.

Front

What is the difference between afferent and efferent neurons?

Back

Afferent neurons carry sensory information to the CNS; efferent neurons carry motor commands from the CNS.