BIOA02H3 Lecture Notes - Lecture 1: Blood Vessel, Capillary, Exocrine Gland
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BIOA02H3 Full Course Notes
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In animals, specialized cells are organized into tissues, tissues into organs, organs into organ systems, and organ systems into organisms. Cells are specialized and organized into tissues. Tissue a group of cells with the same structure and function, working as a unit to carry out one or more activities. Organ an assembly of tissues integrated into a structure that carries out a specific function. Organ system a group of organs that carry out related steps in a major physiological process. Epithelial tissue forms protective, secretory, and absorptive coverings and linings of body structures: protective covering, large sheets of cells that are very close to each other. Connective tissue supports other body tissues: most cells in out body are connective tissue, like ligaments and tendons that attach bone to bone or tissue to tissue, blood, bones, fat, tendons, ligaments. Loose jelly type made out of cell is all examples of connective tissue.