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The process by which an organism's internal environment is kept stable in spite of changes in the external environment is called
the functions of the skeletal system
enables you to move, protects your organs, produces blood cells, and fores minerals and other until your body needs them
while one muscle in the pair contracts, the other returns to its original length
How do pairs of skeletal muscle work together?
The skin protects the body from
disease keeping disease-causing microorganisms from entering the body.
The functions of the digestive systems are
to break down food, absorb nutrients, and eliminate undigested wastes from the body.
What carbohydrate helps your digestive system function even though your body cannot digest it?
the functions of the cardiovascular system include:
transporting cells that attack disease- causing microorganisms;
carrying oxygen, glucose, and other needed materials to cells;
carrying watse products away from cells
it contains little oxygen and a lot of carbon dioxide.
When blood flows into the right atrium from the body,
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