What are the major functions of skin?

A new type of drug administration has been used which is called Transdermal administration. Describe how the drug is absorbed and discuss the usefulness of this form of medication delivery.

Several conditions exist which can cause the skin to change color. What are these conditions and how do they effect the skin color?

Describe what happens to cholesterol when exposed to ultraviolet light .

What are the functions of the Merocrine sweat glands?