Integumentary System
Lesson 1: Anatomy and Physiology of the Integumentary System
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1-1. INTRODUCTION
a. The integumentary system, consisting of the skin and its derivatives, is the largest and one of the most complex systems of the body. The surface area of the skin covers about 1.8 square meters (19.4 square feet) of the body of the average male adult. The skin weighs about six pounds and receives roughly one-third of all blood circulating through the body. It is difficult to think of the skin as a system, but it is a complex of organs (sweat glands, oil glands, and so forth). It is elastic, regenerates, and functions in protection, thermoregulation, and sensation.
b. The protection, sensations, secretions, and the other functions which the integument gives to the rest of the body are essential for life. Changes in the normal appearance of the skin often indicate abnormalities or disease of body function. As a medical non-commissioned officer (NCO), you need to recognize changes in skin appearance that your treatment might affect. A basic knowledge of the normal anatomy and physiology of the integumentary system is essential to your job.
