A _________ is a unit of energy that describes how much energy the body can get from eating or drinking certain foods.

These are substances your body needs and gets by breaking down food

This number represents a typical or central value

What three processes take place in the digestive system?

What is the main role of the Circulatory System

___________ is the process the body uses to break down food.

____________ is the process by which nutrient molecules are passed from the digestive system into blood.

____________ is the discharge of waste from the body.

_________ are bean-shaped organs that create and excrete urine.

The ____ is a dome shaped musce when it is relaxed that helps change the size of the chest cavity while breathing.

These organs expand and shrink to keep air in while gas exchange occurs

This 4 chambered muscular organ pumps blood

These blood vessels take blood away from the heart

These microscopic air sacs in the lungs are where oxygen and carbon dioxide are exchanged.

These blood vessels return blood to the heart

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