6.1 Nervous System

What are the 2 nervous systems?

(see your chart)

• brain and spinal cord

• somatic and autonomic

• central and peripheral nervous systems

• sympathetic and parasympathetic nervous systems

Main function of a neuron:

• transmit messages

• protect the spinal cord

• conserve energy

• fight infection

Long-term memories may improve when

(think logically)

• axons eliminate the myelin sheath

• reactions decrease within cell bodies.

• impulses reverse direction.

• dendrites grow or become enlarged.

The space between neurons is called the

(bottom of page 150)

• myelin sheath

• synapse

• axon terminal

• dendrite

Which direction do neurons fire?

(Use your worksheet with neuron drawing.)

• dendrites to synapse

• synapse to dendrites

The act of shooting a basketball relies primarily on

(use worksheet with arm / finger / candle flame)

• afferent neurons

• efferent neurons

• sensory neurons

• interneurons

The autonomic nervous system regulates the action of the

• central nervous system

• somatic nervous system

• involuntary muscles and organs

• 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.

The shape and size of dendrites change over a person's lifetime due to

(Lesson Quiz 6-1 Question 3)

Textbook page 161 .... MORE ABOUT ... side note

• deterioration from over use.

• plasticity.

• hormones in the bloodstream.

Digesting a meal you just ate engages the ____ nervous system.

• sympathetic

• parasympathetic