Human Body Systems

Look at the lungs above. Which level of body organization do lungs represent?

• Organ system

• Cell

• Organ

• Tissue

Which organ system do blood cells and blood vessels belong to?

• Circulatory system

• Nervous system

• Respiratory system

• Skeletal system

Which organ system includes the bones?

• Skeletal system

• Muscular system

• Respiratory system

• Circulatory system

One role of rib bones in the _________________ system is to protect the heart from physical injury.

• Digestive

• Circulatory

• Skeletal

• Muscular

What system is shown in the picture?

• Nervous System

• Circulatory System

• Muscular System

• Skeletal System

The digestive system doesn’t work alone. After nutrients are absorbed in the small intestine, other body systems become involved in the process. Nutrient distribution depends on the _______________ system to transport nutrients to the cells around the body through the bloodstream.

• respiratory

• circulatory

• muscular

• digestive

Your heart is a powerful, fist-shaped muscles that beats 100,000 times a day to power the circulatory system. Which of the following are the functions of the circulatory system? Choose 2 functions that apply.

• Transporting nutrients

• Transporting oxygen

• Breaking down nutrients

• Removing wastes from the body

• Removing water and carbon dioxide from the body

This system brings in oxygen and allows carbon dioxide to exit through the lungs.

• Digestive system

• Skeletal system

• Respiratory system

• Nervous system

• Muscular system

This system allows the brain to communicate with the body.

• Digestive system

• Skeletal system

• Respiratory system

• Nervous system

• Muscular system

Every system in the body is made from cells, tissues, and organs. These building blocks all work together to allow you to grow, obtain energy, move, stay healthy, and reproduce. Each system provides a different function to support life. Which system is a control system in the body?

• Circulatory

• Digestive

• Nervous

• Muscular