The Dermis

The Dermis - the dermal papillae generate epidermal ridges...

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The Dermis The second layer of the skin, the dermis, consists of various connective tissues. As connective  tissue, it contains fibroblasts and macrophages within a gelatinous matrix containing collagen,  elastic, and reticular fibers. The structure provides strength, extensibility (the ability to be stretched),  and elasticity (the ability to return to its original form). It is in the dermis where we find capillaries and  many nerve endings. Major blood vessels are found in the hypodermis. The dermis consists of two layers:  The  papillary layer  is a thin outer layer of areolar connective tissue with fingerlike  projections called  dermal papillae  that protrude into the epidermis. In the hands and feet, 
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Unformatted text preview: the dermal papillae generate epidermal ridges (sweat from the epidermal ridges leaves fingerprints). • The reticular layer is a thick layer of dense irregular connective tissue. It lies deep to the papillary layer and makes up most of the dermis. The Hypodermis The hypodermis (subcutaneous layer, or superficial fascia) lies between the dermis and underlying tissues and organs. It consists of mostly adipose tissue and is the storage site of most body fat. It serves to fasten the skin to the underlying surface, provides thermal insulation, and absorbs shocks from impacts to the skin....
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This note was uploaded on 11/10/2011 for the course PT 101 taught by Professor Staff during the Spring '10 term at Texas State.

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