Human Body System

The organ shown below, identified with an arrow, plays an important role in digestion by producing a substance that helps break down certain foods.

What substance does this organ produce to help digestion?

• oil

• acid

• salt water

• bile

Which system in the human body includes the heart, blood, arteries, and veins?

• cardiovascular

• muscular

• digestive

• respiratory

Which statement best describes the relationship between the nervous system and the muscular system?

• The nervous system controls the muscular system.

• The muscular system controls the nervous system.

• The nervous system provides nutrients for the muscular system.

• The muscular system provides nutrients for the nervous system.

Which two body systems work together to support the body and allow the body to move?

• circulatory and respiratory

• digestive and nervous

• skeletal and muscular

• circulatory and digestive

Which body system protects the organs of the body?

• digestive

• respiratory

• skeletal

• muscular

What is the function of the respiratory system?

• To digest your food

• To remove waste from the body

• To take in oxygen and remove carbon dioxide

• To fight disease

What is the function of the digestive system?

• It transports blood and oxygen to your cells

• It breaks down food so the nutrients can be absorbed by your body

• It helps you breathe by taking in oxygen and transporting carbon dioxide out of your body

• It helps you move

Which body system includes the brain and spinal cord?

• digestive

• respiratory

• skeletal

• nervous

In what way are the digestive and circulatory systems alike?

• Both protect organs in the body.

• Both control movement of the body.

• Both absorb gases or nutrients into the body.

• Both provide structural support for the body.

Which body system transports nutrients and gases?

• circulatory

• nervous

• skeletal

• muscular