Ahe 519 Wk 2 The Cell

• The cell is the basic unit of structure and function of all living things Mitosis Stages • Phase I • Interphase (resting stage) • Phase II • • • •

• Prophase Phase III • Metaphase Phase IV • Anaphase Phase V • Telophase Cycle back to interphase

CELL DISORDERS ATROPHY wasting away of the body or of an organ or part, as from defective nutrition or nerve damage HYPERTROPHY Enlargement or overgrowth of an organ or part of the body due to the increased size of the constituent cells. Hypertrophy occurs in the biceps and heart because of increased work. DYSPLASIA Abnormal development or growth of tissues, organs, or cells HYPERPLASIA abnormal increase in number of cells NEOPLASIA he process of abnormal and uncontrolled growth of cells. The product of neoplasia is a neoplasm (a tumor). ANAPLASIA loss of structural differentiation within a cell or group of cells often with increased capacity for multiplication, as in a malignant tumor

TUMOR abnormal growth of cells (termed neoplastic BENIGN TUMOR tumor that doesn't come back and doesn't spread to other parts of the body

MALIGNANT TUMOR malignant tumors have two goals in life: to survive and to conquer new territory.

METASTASIS spread

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Tissues are groups of cells Epithelial tissue Connective tissue Muscle tissue Nervous tissue