Chapter 4 Skin And Body Membranes Packet Answers Key.zip =link=

What protein makes the skin tough and water-resistant? A: Keratin.

Beneath the epidermis lies the dermis, composed of dense connective tissue. It has two layers: Chapter 4 Skin And Body Membranes Packet Answers Key.zip

: These line all body cavities that open to the exterior, such as the respiratory, digestive, and reproductive tracts. They are "moist" membranes adapted for absorption or secretion. What protein makes the skin tough and water-resistant