The Nervous System and Neurons and Neuronal Firing video-quiz

Which signals are responsible for transmitting information in the nervous system?

• Electrical and chemical signals

• Only electrical signals

• Only chemical signals

• Magnetic signals

What is the function of the nervous system as described in the material?

• It allows you to walk, breathe, blink, and process information from inside and outside your body.

• It only helps you move your muscles.

• It only controls your thoughts.

• It only helps you digest food.

How do action potentials contribute to the functioning of the nervous system?

• They race to and from the brain, sending, receiving, and processing information.

• They help in digesting food.

• They store memories.

• They produce hormones.

Imagine you suddenly feel something crawling on your arm. Using strategic thinking, explain how your nervous system processes this sensation and what actions might follow.

• Your nervous system detects the sensation, sends signals to your brain, which interprets it and may prompt you to look at or brush off your arm.

• Your digestive system processes the sensation and makes you hungry.

• Your respiratory system makes you breathe faster.

• Your circulatory system increases your blood flow.

If your blood sugar drops and you faint, what role does your nervous system play in this situation?

• It processes information from inside your body and responds to changes, such as low blood sugar, by sending signals that may result in fainting.

• It increases your muscle strength.

• It makes you feel happy.

• It helps you see better.

Within the nervous system, how does information typically travel?

• In multiple directions at once

• In one direction

• In a circular loop

• Randomly between neurons

What is the role of the spinal cord in the nervous system?

• Producing hormones

• Carrying messages between the brain and the rest of the body

• Digesting food

• Filtering blood

Describe a situation where the reflex arc is used instead of waiting for the brain to process information. Explain why this is beneficial.

• When you touch something hot, the reflex arc allows you to quickly withdraw your hand before the brain processes the pain, preventing injury.

• When you read a book, the reflex arc helps you understand the words faster.

• When you sleep, the reflex arc keeps you dreaming.

• When you eat, the reflex arc helps you digest food faster.

Which part of the nervous system is responsible for carrying out the brain's orders and bringing in new information constantly?

• Central nervous system (CNS)

• Peripheral nervous system (PNS)

• Autonomic nervous system

• Somatic nervous system

What is the main function of the somatic nervous system?

• Controls involuntary actions like heartbeat and digestion

• Relays sensory information to the brain

• Controls voluntary movements such as raising your hand

• Processes information in the spinal cord