Human Body Systems

Mason is learning about how his body works. He wonders which organ pumps blood to his lungs and the rest of his body. Which organ is responsible for this?

• Stomach

• Kidneys

• Liver

• Heart

Grace is learning about the human body in her science class. She wants to know which body system includes bones. Which system should she study?

• Muscular System

• Skeletal System

• Circulatory System

• Respiratory System

During a biology class, Sophia is learning about the circulatory system. Her teacher asks, "What is the main role of veins in the circulatory system?"

• Absorb nutrients

• Produce digestive enzymes

• Carry blood to the heart

• Carry blood away from the heart

Hannah is learning about the digestive system in her biology class. She wants to know: what is the main function of the small intestine?

• Store bile

• Absorb nutrients

• Produce blood cells

• Filter waste

Henry is running a race and his body needs to deliver energy from food and oxygen to his cells so he can keep going. Which system in his body is responsible for carrying these materials?

• Circulatory System

• Digestive System

• Respiratory System

• Skeletal System

Priya is learning about how the body digests food. She wonders which organ produces bile to help digest fats. Can you help her find the answer?

• Stomach

• Kidneys

• Liver

• Heart

Priya is running in the park and starts to breathe heavily. Which organ helps her breathe in oxygen?

• Kidneys

• Lungs

• Liver

• Stomach

Charlotte is learning about the human body in her science class. She wants to know which is the largest organ INSIDE the body that makes digestive juice. Can you help her choose the correct answer?

• Liver

• Gallbladder

• Small intestine

• Mouth

Michael is running a race and his body needs to deliver oxygen quickly to his muscles. Which strong muscle is responsible for pumping blood around his body?

• Heart

• Lungs

• Veins

• Arteries

When Emma touches a hot stove, her body quickly moves her hand away. The (a)   system carries messages to control her body's actions.