Khan Academy Nervous System

What is the main function of the nervous system?

• To control all the muscles in the body

• To process information and make decisions

• To communicate with the senses

• To send signals to the internal organs

How does the nervous system allow your brain to control your muscles?

• By generating electrical signals in the brain

• By contracting and relaxing the bicep muscles

• By sending electricity through the nerves to the muscles

• By using the spinal cord to connect the brain and muscles

What happens when someone taps on your shoulder?

• The nerves near the skin generate electricity

• The brain processes the electrical signal

• The neck muscles contract and turn your head

• All of the above

How do your senses communicate with your brain?

• By converting stimuli to electricity

• By using cranial nerves to send signals

• By sending electrical signals to the brain

• All of the above

What are the two main parts of the nervous system?

• Central and peripheral

• Brain and spinal cord

• Cranial and spinal nerves

• Muscles and organs

What is the function of the central nervous system?

• To process information

• To communicate with the senses

• To control the muscles

• To collect and analyze information

What is the function of the peripheral nervous system?

• To process information

• To control the muscles

• To communicate with the central nervous system

• To analyze information

What are the branches of the peripheral nervous system called when they come from the brain?

• Cranial nerves

• Spinal nerves

• Peripheral nerves

• Central nerves

What are the branches of the peripheral nervous system called when they come from the spinal cord?

• Cranial nerves

• Spinal nerves

• Peripheral nerves

• Central nerves

What is the role of the peripheral nervous system?

• To process information

• To control the muscles

• To communicate between the body and the central nervous system

• To analyze information