Skeletal, Muscular & Heart Practice Worksheet

(4)_ & _ (5)_ made by specialized cells. The second layer of skin is called the_ (6)_. In this layer you can find _ (7)_ that help maintain a constant body temperature. When they contract heat is _ (8)_ and when they dilate heat is_ (9)_. Also in this layer you can find _ (10)_ that consists of dead cells filled with _ (11)_ (a protein). These ... ................
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