Nerve Function and Structure

What part of the body protects the spinal cord?

• Stomach

• Leg bones

• Spinal column

• Rib cage

What is the primary function of nerves?

• To pump blood throughout the body.

• To digest food and absorb nutrients.

• To carry information from the brain to muscles.

• To filter waste products from the blood.

Approximately how fast can some nerve signals travel?

• 10 meters per second

• 50 meters per second

• 100 meters per second

• 1000 meters per second

What are the structures along a nerve that pass messages from one point to another?

• Neurons

• Ion Channels

• Synapses

• Myelin Sheaths

What is the function of the myelin sheath around many nerves?

• It provides structural support to the nerve.

• It slows down nerve signals to prevent overstimulation.

• It allows nerve signals to jump and travel faster.

• It produces energy for the nerve cells.