The DermisThe Dermis

DermisDermis Composed of dense connective tissueComposed of dense connective tissue The Dermis is strong and stretchy (elastic)The Dermis is strong and stretchy (elastic) Leather goods are made from the dermis Leather goods are made from the dermis

of animals.of animals. The dermis is composed of two layersThe dermis is composed of two layers

The papillary layer, located just under the The papillary layer, located just under the stratum basale. The folds and loops of the stratum basale. The folds and loops of the papillary layer gives you fingerprints! Most of papillary layer gives you fingerprints! Most of the nerve receptors are located herethe nerve receptors are located here

The reticular layer is the deepest skin. It The reticular layer is the deepest skin. It contains sweat and oil glands, blood vessels, contains sweat and oil glands, blood vessels, and deep pressure receptorsand deep pressure receptors

Skin ColorSkin Color Three things can contribute to skin colorThree things can contribute to skin color

1. The pigment Melanin. The more you make 1. The pigment Melanin. The more you make the darker you are.the darker you are.

2. The pigment Carotene. Found in yellow 2. The pigment Carotene. Found in yellow and orange foods (carrots). This pigment is and orange foods (carrots). This pigment is deposited in the stratum corneum and gives deposited in the stratum corneum and gives the skin a yellowish or orangish color.the skin a yellowish or orangish color.

3. The pigment Hemoglobin. Found in red 3. The pigment Hemoglobin. Found in red blood cells. Skin is naturally transparent, if blood cells. Skin is naturally transparent, if you have an abundance of capillaries near the you have an abundance of capillaries near the surface, you may have pink or red skinsurface, you may have pink or red skin

Skin colors have meaning!Skin colors have meaning! Redness (erythema): Embarrassment, Redness (erythema): Embarrassment,

fever, hyperyension, inflammation, allergyfever, hyperyension, inflammation, allergy

Pallor (blanching) – Skin becomes pale. Pallor (blanching) – Skin becomes pale. Caused by anger, fear, anemia, low blood Caused by anger, fear, anemia, low blood pressure, impaired blood flowpressure, impaired blood flow

Jaundice – a yellow cast, caused by the Jaundice – a yellow cast, caused by the liver producing too much bile. Common in liver producing too much bile. Common in infantsinfants

Bruising (hemotomas)– Black or blue Bruising (hemotomas)– Black or blue marks that show where blood has escaped marks that show where blood has escaped from the circulatory system and clotted in from the circulatory system and clotted in the tissues. May signify low Vitamin C or the tissues. May signify low Vitamin C or hemophiliahemophilia

Skin ProblemsSkin Problemsnext time!next time!