Nervous System Functions and Reflexes

The video explains the nervous system's role in processing information and controlling body functions. It divides the system into the central nervous system, which includes the brain and spinal cord, and the peripheral nervous system, which consists of nerves branching from the central system. The video also covers reflex actions, where the spinal cord processes signals for quick responses. Overall, the nervous system is a vital communication center for interpreting information and sending signals to control the body's functions.

What is the primary function of the nervous system during quiet moments?

• To process information and send signals

• To increase heart rate

• To rest and conserve energy

• To shut down non-essential functions

How is the nervous system divided?

• Into sensory and motor systems

• Into the brain and spinal cord

• Into central and peripheral systems

• Into voluntary and involuntary systems

What organs are included in the central nervous system?

• Brain and spinal cord

• Heart and lungs

• Stomach and intestines

• Liver and kidneys

What protects the organs of the central nervous system?

• Blood vessels and nerves

• Muscles and skin

• Bones such as the skull and vertebrae

• Cartilage and tendons

What is the role of the peripheral nervous system?

• To produce hormones

• To interpret information

• To protect the brain

• To connect the central nervous system to the rest of the body

How does the brain respond when you smell cookies baking?

• It sends signals to make your mouth water

• It increases your heart rate

• It makes you feel sleepy

• It causes you to sneeze

What is a reflex action?

• A voluntary movement

• A conscious decision

• A slow response to stimuli

• An automatic response to a stimulus

What happens during a reflex arc?

• The body remains still

• The heart rate increases

• A signal travels to the spinal cord and back to the muscle

• The brain processes the information first

Why are reflex actions important?

• They regulate body temperature

• They improve memory

• They allow for quick responses to avoid injury

• They help in digestion

What is the role of the nervous system in controlling body functions?

• It filters waste from the blood

• It produces red blood cells

• It stores energy for later use

• It sends signals to regulate functions