Exercise 7: The Integumentary System
The two basic tissues of which the skin is composed are dense irregular connective tissue, which makes up the dermis, and _______, which forms the epidermis.
The tough water-repellent protein found in the epidermal cells is called_______.
The pigments melanin and _______ contribute to skin color.
A localized concentration of melanin is referred to as a ________.
Four protective functions of the skin are
a. Prevents desiccation
b. Prevents bacterial invasion
c. Protects against thermal damage
d. Protects against UV radiation