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The Human Skin—Engineered by God

by  Taylor Richardson

In what single place can you find the following things: 19 million cells, 625 sweat glands, 90 oil glands, 65 hairs, 19 feet of blood vessels, and 19,000 sensory cells? The answer: in one square inch of human skin! The human skin is considered the largest organ in the body (about 16% of your body weight), and covers an area of 20 square feet. Your skin, or integument, has many different protective and metabolic functions that help keep your body stabilized.


You have two skin layers. The outer layer, the epidermis, consists of rows of cells about 12 to 15 deep, and is between 0.07 and 0.12 millimeters thick (about as thick as a piece of paper). This top layer is composed mainly of dead cells that are being replaced constantly by newer cells. Isaac Asimov explained the process in his book, The Human Body:

The cells at the base of the epidermis are alive, and are constantly growing and multiplying so that cell after cell is pushed upward and away from the dermis. Without a blood supply, the cell dies and much of it, aside from the inert keratin, atrophies. The vicissitudes of existence are constantly rubbing away some of this dead material from the surface of our body, but this is constantly being replaced from below, and we retain our epidermis ever fresh (1963, pp. 258-259).

Sometimes, when areas of the skin are subjected to constant friction, the epidermis responds by thickening itself in that area, creating a callus. These patches of hard skin usually are found on the soles of feet of people who walk barefoot, and on the hands of farmers. It is as though the dermis had traded in its thin plastic gloves for a pair made of leather.

The inner layer, or dermis, is a spongy, leathery area that is about one to two millimeters thick, consisting mainly of collagen (a fibrous protein found in the skin) connective tissue. The dermis is joined to the epidermis by a grooved surface that contains nerves, blood vessels, hair follicles, sebaceous glands, and sweat glands, all of which have important functions. Each hair follicle, for example, contains one hair that transmits the reception of touch to sensory nerves around the follicle. Sebaceous glands produce a waxy secretion called sebum, which helps to waterproof the skin. Sweat glands help to cool the skin and keep the body temperature constant.





Layers of Skin








Asimov, Isaac (1963), The Human Body (New York: New American Library).

Gillen, Alan L., Frank J. Sherwin III, and Alan C. Knowles (1999), The Human Body: An Intelligent Design (St. Joseph, MO: Creation Research Society).


McCutcheon, Marc (1989), The Compass in Your Nose (Los Angeles, CA: Jeremy P. Tarcher).

Copyright © 2004 Apologetics Press, Inc. All rights reserved.


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