Find clinic locations for Fort HealthCare and affiliated clinics and services in Jefferson County, Wisconsin.
Find services offered by Fort HealthCare and affiliated clinics in Jefferson County, Wisconsin.
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We coordinate community education and health-related events and screenings for the Fort HealthCare service area.
The skin is the body's largest organ. It covers the entire body. It serves as a protective shield against heat, light, injury, and infection. The skin also:
Regulates body temperature
Stores water and fat
Is a sensory organ
Prevents water loss
Prevents entry of bacteria
Acts as a barrier between the body and its environment
Helps to make vitamin D when exposed to the sun
Your skin takes on different thickness, color, and texture all over your body. For example, your head contains more hair follicles than anywhere else. But the soles of your feet have none. In addition, the soles of your feet and the palms of your hands are much thicker than skin on other areas of your body.
The skin is made up of 3 layers:
Epidermis
Dermis
Subcutaneous fat layer (hypodermis)
Each layer has certain functions.
Layer
What it does
The epidermis is the thin outer layer of the skin. It consists of 2 primary types of cells:
Keratinocytes. Keratinocytes comprise about 90% of the epidermis and are responsible for its structure and barrier functions.
Melanocytes. Melanocytes are found at the base of the epidermis and make melanin. This gives the skin its color.
The dermis is the middle layer of the skin. The dermis contains:
Blood vessels
Lymph vessels
Hair follicles
Sweat glands
Collagen bundles
Fibroblasts
Nerves (pain, touch, and temperature receptors)
Sebaceous glands
The dermis is held together by a protein called collagen. This layer gives skin flexibility and strength.
Subcutaneous fat layer
The subcutaneous fat layer is the deepest layer of skin. It consists of a network of collagen and fat cells. It helps conserve the body's heat and protects the body from injury by acting as a shock absorber.