9-7-06 MEMBRANES

9-7-06 MEMBRANES - MEMBRANES, INTEGUMENT, AND HAIR BODY...

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MEMBRANES, INTEGUMENT, AND HAIR BODY MEMBRANES Formed by 2 different types of tissue, Epithelium and Connective tissue TYPES OF MEMBRANES (Fig 4.13) Mucou s membrane (mucosa) – secretes thick mucus o Lines inside of cavities Inside EVERY hollow organ that opens to the outside of the body: digestive tract, urinary tract, reproductive tract, respiratory tract, etc… o Exposed to external environment Serous Membrane (serosa) – secretes thin watery fluid o Found in the lining of major visceral organs Visceral Serosa – In direct contact with organ Parietal Serosa – on outside of membrane, does not touch organ Serous Cavity – space in between visceral and parietal serosa o Not exposed to external environment INTEGUMENT (Fig 5.1) SKIN Second largest organ in body by weight o Organ because it is composed of multiple tissue types (Epithelial and Connective) Made up of the dermis and the epidermis. Epidermis is on top. Hypodermis is below dermis, but NOT a part of the skin STRUCTURE Epidermis – outermost layer made mostly of epithelium. Epithelial cells in epidermis are called
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This note was uploaded on 02/27/2008 for the course IPHY 3410 taught by Professor Tsai,pei-s during the Spring '08 term at Colorado.

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9-7-06 MEMBRANES - MEMBRANES, INTEGUMENT, AND HAIR BODY...

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