Simple Pharmanotes

Tissue Definition: Tissue is a group of cells having similar structure and function. Main Tissues found in Human Body: Epithelial Tissue: Connective Tissue. Muscular Tissue. Nervous Tissue. Epithelial Tissue: Also called as “Epithelium”. It forms covering of organs. They are derived from all three embryonic layers. Location of Epithelial Tissue: Covering of the organs exposed to the outer environment e.g. skin, GI tract, respiratory tract, urinary and reproductive tract etc. Epithelium tissue forms much of the glandular tissue.  It forms internal lining of the cavities and hollow organs. Basic Functions of Epithelium Tissue: Protects body from physical, biological and chemical wear and tear. Selective transport: Act as gatekeeper as forms covering of the tissues. Secretion: Secretes mucus and other chemicals. Absorption: Intestinal columnar epithelium. Excretion: Sweat Glands. Structural Features of Epithelium Tissue: Epithelium tissue is tightly packed. Non vascular: No blood supp...