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 plantar aponeurosis, also known as the plantar fascia, is a strong layer of white fibrous tissue located beneath the skin on the sole of the foot. Towards the front of the foot, at the mid-metatarsal level, it divides into five sections, each extending into a toe and straddling the flexor tendons.