Body_Tissues

Body_Tissues - Body Youll never look at a tissue the same...

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Body You’ll never look at a tissue the same way again!!!!
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Facts about Body Originates during embroyic development in @ 2 weeks after fertilization implantation occurs.
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4 Classifications of Body Epithelial Tissue-covers surface that lines the body cavity, lines hollow organs, tubes and form glands. Connective Tissue-protects and supports the body and helps bind organs together. Also, help to store E and where immune cells reside. Muscular Tissue-allows contraction of muscle. Nervous Tissue-initiates and transmit impulses which coordinates the body’s activities.
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EPITHELIUM Cells are packed. Not a lot of extracellular fluid (EF). Arranged in sheets, layers of columns Has a free surface and a basal surface Avascular-No blood supply (nutrients are obtained via diffusion. Nerve supply are sensory neurons.
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Epithelium Characteristics There are 3 types of Epithelium Surfaces Apical Surface-”free” or superficial Lateral Surface-side surface Basal Surface-basement layer (order is arranged from superficial >>>deep)
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“We a family…” There are 4 different types/shapes of Ep. tissue. Squamous Cuboidal Columnar Transitional-interchanging of all cells Diagram, name function
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Body Layers BT Layers Endoderm Mesoderm Ectoderm
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Organs in these layers Endoderm- “inner skin”-locations include GI track, lining of bladder, and respiratory sys. Mesoderm- “middle skin”-locations include skeletal, muscle, and blood dermis of skin. Ectoderm- “outer skin”- locations include nervous, skin, and oral cavity.
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Protection
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This note was uploaded on 11/10/2011 for the course PDBIO 220 taught by Professor Tomco during the Winter '09 term at BYU.

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Body_Tissues - Body Youll never look at a tissue the same...

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