Read About It: The Nervous System

What is the main function of the nervous system?

• Receiving information, responding to information, and maintaining homeostasis

• Controlling only voluntary actions

• Regulating only the heart rate

• Maintaining only body temperature

Which part of the nervous system is responsible for involuntary actions like pupil dilation?

• Peripheral Nervous System

• Central Nervous System

• Only the brain

• Only the spinal cord

What is a reflex arc?

• A simple nerve pathway that triggers an automatic response

• A voluntary action controlled by the brain

• A type of neuron

• A part of the central nervous system

How do sensory neurons function in the nervous system?

• They pick up stimuli and send impulses to interneurons

• They interpret impulses as a response

• They send impulses directly to muscles

• They are responsible for maintaining homeostasis

What is the role of interneurons in the nervous system?

• They interpret impulses and decide how to react

• They send impulses from the brain to muscles

• They pick up stimuli from the environment

• They maintain body temperature

Which of the following is NOT a function of the nervous system?

• Digesting food

• Receiving information

• Responding to stimuli

• Maintaining homeostasis

What happens when you touch a painful stimulus according to the reflex arc?

• Sensory neurons send information to the spinal cord, triggering a muscle contraction

• The brain immediately processes the pain and sends a response

• Motor neurons send impulses directly to the brain

• Interneurons in the brain decide the response