These can be found in your saliva and assist in breaking down food in your mouth.
These blood vessels generally carry blood away from the heart.
Your muscles in this body system move your bones, pump your blood, and move food through your stomach and intestines.
This body system gets rid of wastes that your body produces and also maintains fluid balance.
These are tiny blood vessels that deliver oxygen and nutrients in the blood directly to the body's cells.
This body system associated with the bones of the human body allow you to stand and move with the help from the muscular system.
Liquid waste from this organ is called urine and is stored in the bladder.
This body system enables you to breathe and one of its main organs are the lungs.
When this organ associated with the excretory system fills up, the brain sends a message telling the muscles to contract which then removes solid waste from the body.
This is the process by which your body breaks down food into small nutrient particles.
This body system allows the different blood vessels to move blood to and from tissues throughout the human body.