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Although you may not typically think of the **skin** as an organ, it is in fact made of tissues that work together as a single structure to perform unique and critical functions. The skin and its accessory structures make up the integumentary system, which provides the body with overall protection. The skin is made of multiple layers of cells and tissues, which are held to underlying structures by connective tissue. The deeper layer of skin is well vascularized (has numerous blood vessels). It also has numerous sensory, and autonomic and sympathetic nerve fibers ensuring communication to and from the brain.
*LICENSES AND ATTRIBUTIONS
CC licensed content, Shared previously, Donna Browne, Integumentary System Module 2: Layers of the Skin, Authored by: OpenStax College. License: CC BY: Attribution. License Terms: Download for free at:http://cnx.org/contents/jVjPC3sT@1/Integumentary-System-Module-2-*