Overview of the Nervous System

Front

The nervous system not only controls voluntary movement by activating skeletal muscle, but it also directs the __________ functions of smooth muscle in internal organs and cardiac muscle in the heart.

Back

involuntary

Front

Our __________ are dependent on sensory electrical input from receptors.

Back

senses

Front

There are __________ major divisions of the human body's nervous system.

Back

2

Front

CNS stands for...

Back

Central Nervous System

Front

PNS stands for...

Back

Peripheral Nervous System

Front

Injuries to either the brain or spinal cord have serious consequences and can be life threatening. True or False?

Back

True

Front

The parts of the __________ system OTHER than the brain and spinal cord make up the PNS.

Back

nervous

Front

Nerves that transmit impulses from the sensory receptors in the skin, muscles, and joints to the CNS are known as __________ nerves.

Back

afferent

Front

Nerves that carry impulses from the CNS out to the muscles and glands are __________ nerves.

Back

efferent

Front

There are _____ functional subdivisions of the efferent (motor) nerves.

Back

2