What is the main function of the circulatory system?

• To digest food

• To pump blood throughout the body

• To produce hormones

• To store energy

Which organ is part of the respiratory system?

• Heart

• Stomach

• Lungs

• Liver

What does the circulatory system deliver to cells?

• Carbon dioxide and waste products

• Oxygen and nutrients

• Hormones and enzymes

• Water and minerals

Where does gas exchange occur in the respiratory system?

• Heart

• Alveoli

• Stomach

• Kidneys

What is the main function of the digestive system?

• Filters waste products from the blood

• Breaks down food into nutrients

• Maintains water and salt balance

• Acts like natural filters

Which organ is part of the excretory system?

• Stomach

• Liver

• Kidney

• Esophagus

How long is the small intestine approximately?

• 10 feet

• 15 feet

• 20 feet

• 25 feet

What is the role of kidneys in the excretory system?

• Breaks down food into nutrients

• Absorbs nutrients into the bloodstream

• Filters waste products from the blood

• Removes undigested food as waste

What are the main organs of the nervous system?

• Heart, lungs, stomach

• Brain, spinal cord, nerves

• Liver, kidneys, pancreas

• Skin, muscles, bones

Which function is NOT performed by the nervous system?

• Controls body activities by sending signals

• Coordinates movement and thoughts

• Digests food and absorbs nutrients

• Responds to the environment