Which major body system breaks down food to release nutrients needed for energy production?

• digestive
• muscular
• respiratory
• cardiovascular

Which is part of the digestive system?

• brain
• stomach
• heart

Which body system carries signals to and from the brain?

• skeletal
• circulatory
• respiratory
• nervous

Which are parts of the digestive system?

• mouth, lungs
• mouth, brain
• mouth, teeth
• mouth, feet

Which system moves waste from the digestive system?

• nervous system
• circulatory system
• muscular system
• skin system

Which system is most closely associated with the brain?

• respiratory
• circulatory
• body system
• nervous

Why is the digestive system so important for the human body?

• it circulates blood to all of the organs
• it moves oxygen through the lungs and into the blood
• it carries away waste products from the place they are created
• it breaks down food into nutrients and moves the nutrients into the blood

What is the main function of the nervous system?

• absorb nutrients for energy
• deliver messages to the brain
• clean wastes from the cells
• take in oxygen through the lungs for the cells

How are the muscular and digestive systems related?

• swallowed food is pushed through the esophagus
• the diaphragm, above the intestines, inflates and deflates
• nutrients are transported to the bones to help them function
• the heart absorbs oxygen and nutrients from various parts of the body

How does the skeletal system benefit the nervous system?

• it protects the lungs
• it protects the heart
• it protects the brain and spinal cord
• it protects the esophagus and stomach