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.
Subcutaneous Layer of the Skin (Hypodermis) Location The subcutaneous layer of the skin lies just below the dermis. It is most abundant in the palms of the hands and soles of the feet. Structure The subcutaneous layer of the skin is composed of loose connective tissue and adipose (fat) tissue. Contains collagen and elastic fibers which are continued from the dermis. Collagen fibers hold structures together. Elastic fibers stretchy easily.