The breaking up of food into smaller pieces by a physical action is called....

Tissue that covers the wind pipe (trachea) when swallowing food?

Enzyme found in the mouth...

Important structure located in the small intestine

Enzymes help which type of digestion?

Wave like muscle contractions that help move food through the digestive system

Transportation is the main job of which body system?

General flow of blood in the body is...

Which chamber of the heart is the most powerful?

Vessels that carry blood away from the heart are...

Vessels that carry blood back to the heart are....

Vessels where the exchanges of gases and nutrients take place

Which of the following is the liquid part of the blood?

Cells that help protect your body from disease....

Which heart chamber receives blood from the body?

During respiration,

Which structure filters the air you are breathing?

In the lungs, gases are exchanged between the capillaries and the....

Vocal cords are located in the

Which muscles are responsible for breathing

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