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Human Biology. Organization. Cells to Organ Systems. Cells: Basic unit of structure and function Tissues: Group of similar cells performing the same function Organs: Group of tissues performing same function Organ Systems: Group of Organs performing unified function. Tissues.
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Human Biology Organization
Cells to Organ Systems • Cells: Basic unit of structure and function • Tissues: Group of similar cells performing the same function • Organs: Group of tissues performing same function • Organ Systems: Group of Organs performing unified function
Kinds of Tissues • Muscle: contracts, enables movement • Nervous: conducts messages, controls and directs the body • Epithelial: forms outer layer of skin and inside layer of organs. • Connective: connects body tissues, provides support; bone, blood, lymph