Nervous System

What are the two main parts of the nervous system?

Fill in the blank: The brain and spinal cord make up the ______ nervous system.

• central

• peripheral

• autonomic

• somatic

The function of motor nerves is to:

• transmit sensory information to the brain

• control voluntary and involuntary movements

• regulate hormone secretion

• process visual and auditory information

Which type of nerves transport signals to the brain to communicate what is occurring in the outside world?

Fill in the blank: The ______ nervous system works automatically so people do not have to think about them.

• autonomic

• central

• peripheral

• somatic

What are the three important parts of a motor neuron?

Fill in the blank: Myelin is a fatty substance that covers the nerve fibers. It helps messages go fast through the _______.

• nerves

• muscles

• bones

• skin

Axons connect to muscles by forming synapses known as:

• Neuromuscular junctions

• Dendrites

• Myelin sheaths

• Axon terminals

True or False: There is generally only one axon per cell.

• True

• False

Reflexes in the human body work by:

• sending signals directly to the brain for processing

• bypassing the brain and using the spinal cord for quick responses

• involving only the peripheral nervous system

• requiring conscious thought to initiate