Melanin is a component of the skin that provides:

________ occurs when there is insufficient blood flow to the heart via the right or left coronary artery

A) CHF B) MI C) CAD D) HTN

Advanced caries is seen radiographically as a radiolucency that

A) penetrated less than halfway through the enamel. B) penetrated over halfway through the enamel but did not reach the DEJ. C) penetrated at or through the DEJ but less than halfway through the dentin toward the pulp. D) penetrated over halfway through the dentin toward the pulp.