Human Body Systems Worksheet

Which system controls all body functions?

• Digestive system

• Nervous system

• Excretory system

• Skeletal system

The heart is part of which system?

• Muscular system

• Nervous system

• Circulatory system

• Excretory system

What is the function of the lungs?

• Pump blood

• Absorb nutrients

• Remove waste

• Exchange oxygen and carbon dioxide

The largest organ in the human body is:

• Heart

• Skin

• Liver

• Lungs

The skeletal system provides:

• Energy

• Oxygen

• Support and protection

• Nutrients

The digestive system helps the body:

• Breathe

• Break down food

• Pump blood

• Move muscles

Which organ produces digestive enzymes?

• Heart

• Pancreas

• Lungs

• Brain

What is the main function of the stomach?

• Store waste

• Absorb nutrients

• Break down food with acid

• Pump blood

The small intestine is responsible for:

• Absorbing nutrients

• Producing bile

• Storing food

• Filtering blood

What organ removes waste from the blood?

• Stomach

• Liver

• Kidneys

• Lungs