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(open or closed), system in which blood is not always contained within a network of blood vessels
An animal whose body controls and regulates its temperature by controlling the internal heat it produces
a part of an organism consisting of an aggregate of cells having a similar structure and function
the last section of the digestive system, where water is absorbed from food and the remaining material is eliminated from the body
Subcutaneous layer, attaches dermis to underlying tissue, adipose, areolar connective tissues (energy reserve and padding), vascular
tiny, thin-walled blood vessels that allow the exchange of gases and nutrients between the blood and the cells of the body
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