Unit 5: Hemoglobin Testing 6 Original: October 1999 Revision: September 2010 Before you learn about how to use the HemoCue machine and take blood from clients, you need to learn about anemia and the causes of anemia.
Skin has three layers: 1  The epidermis, the outermost layer of skin, provides a waterproof barrier and creates our skin tone. 2  The dermis, beneath the epidermis, contains tough connective tissue, hair follicles, and sweat glands. 3  The deeper subcutaneous tissue (hypodermis) is made of fat and connective tissue.
The middle layer is the dermis. The bottom layer is the hypodermis.                   dermis and epidermis epidermis and dermis dermis, epidermis and subcutaneous layers. ugly ugly ugy   The two layers that make up the skin are Epidermis and Dermis.