In the teeth, the _______________is a calcified material that covers the outer surface of the root and connects the tooth to the periodontal ligament.

The uvula is most closely associated with the ______________.

In the alimentary canal, the ____________ is described as the outermost, protective layer around an organ.

Pyrogens are chemicals that initiate the _______________ to raise body temperature.

Histamine functions by:

The movement of food through the alimentary canal is referred to as ____________________.

Using immune sera to treat snake bites is an example of:

________________ is defined as the movement of phagocytic cells through capillaries into the site of     inflammation.

Interferons are especially helpful at protecting the body from:

Special chemicals called perforins are released by: