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Nervous System Functions and Brain Lobes

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Nervous System Functions and Brain Lobes

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Questions and Answers

Which response is characteristic of the sympathetic nervous system?

Constrict pupils

Decreased heart rate

Increased motility (correct)

Rest and digest response

Which neurotransmitter is released by postganglionic axons of the sympathetic nervous system?

Melatonin

Epinephrine

Norepinephrine (correct)

Acetylcholine

Which of the following is a characteristic of the sympathetic nervous system's response?

Decreased heartbeat

Constrict blood vessels (correct)

Constriction of pupils

Rest and digest response

What neurotransmitter is released by the preganglionic axons of the sympathetic nervous system?

Acetylcholine Signup and view all the answers

Where are the nerve cell bodies located in the sympathetic nervous system?

Within the effector organs Signup and view all the answers

What effect does the release of norepinephrine by postganglionic axons of the sympathetic nervous system have on target organs?

Promotes calming and relaxation Signup and view all the answers

Which type of neurons conduct impulses away from the brain and spinal cord?

Motor neurons Signup and view all the answers

What is the function of Schwann cells in the peripheral nervous system?

Forming myelin sheaths on axons Signup and view all the answers

Which type of glial cells form myelin sheath on axons in the central nervous system?

Oligodendrocytes Signup and view all the answers

What is the function of nodes of Ranvier in nerve conduction?

Facilitating saltatory conduction in myelinated axons Signup and view all the answers