Ch. 6, Lesson 1: The Basics of the Nervous System

What are the two parts of the nervous system?

• brain and spinal cord

• somatic and autonomic

• central nervous system and peripheral nervous system

• sympathetic nervous system and parasympathetic nervous system

What do the skull and vertebrae have in common?

• Both are part of the peripheral nervous system.

• Both control the body's movements and behavior.

• Both transmit information between different organs.

• Both protect parts of the central nervous system.

What is the main function of a neuron?

• to transmit messages

• to protect the spinal cord

• to conserve energy

• to fight infection

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An undersupply of this neurotransmitter is associated with paralysis and Alzheimer's disease.

• dopamine

• acetylcholine

• GABA

• serotonin

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Long-term memory may improve when

• axons eliminate the myelin sheath.

• reactions decrease within cell bodies.

• impulses reverse direction.

• dendrites grow or become enlarged.

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The space between neurons is called the

• synapse.

• myelin sheath.

• axon terminal.

• dendrite.

What do neurotransmitters determine?

• the distance across a synapse

• the rate at which neurons fire

• the number of dendrites produced

• the location of axon terminals.

The act of shooting a basketball relies primarily on

• afferent neurons.

• interneurons

• efferent neurons

• sensory neurons.

The autonomic nervous system regulates the action of the

• central nervous system.

• involuntary muscles and organs.

• somatic nervous system.

• voluntary skeletal muscles.

How does the sympathetic nervous system prepare the body for strenuous activity?

• by reducing the heart rate

• by reducing blood pressure

• by increasing digestion

• by increasing blood flow to the muscles