Chapter05BodyTissuesandOrganization - I II III Introduction...

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I. Introduction A. Tissues 1. Made of cells 2. Developmental origin 3. Perform specialized functions 4. 200 different kinds of cells 5. Cells are organized into 20 different tissue types B. Organs 1. Made of 2+ tissues 2. Have distinct shapes 3. Perform 1+ specific functions C. Organ systems 1. Made of several different organs 2. Performs related coordinated functions D. Organism 1. Product of coordinated functioning of all organ systems a) 11 systems of the human body II. Formation of primary tissues A. Introduction 1. Primary tissues are formed from about 20 different tissues forming 4 categories a) Epithelial b) Connective c) Muscular d) Nervous B. Formation of primary tissues begins during embryo formation 1. Very early, 3 germinal layers are developed 2. Produced from 2+ germinal layers III. Epithelial tissues A. Characteristics 1. Composed of closely packed, regular shaped & connected cells 2. Little extracellular space 3. Basement membrane connects cells to tissue 4. Forms a protective surface layer Ectoderm Mesoderm Endoderm Epithelium of skin Muscles Epithelial of digestive & respiratory system Lining of mouth, anus, and nostrils Skeleton (bones & cartilage) Secretory parts of liver & pancreas
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Sweat and sebaceous glands Blood Urinary bladder Epidermal derivitives (hair, teeth enamel) Epithelial lining of vessels Epithelial lining of urethra Nervous system Dermis of skin & dentin of teeth Thyroid, parathyroid, thymus
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  • Fall '14
  • EricDavis
  • Organization, Tissues

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