NUR 3125 Lecture Notes - Lecture 2: Endometrial Hyperplasia, Hyperplasia, Weight Training
Document Summary
When cells lack a stable environment or substances they need to survive, cells die. Biochemical lesions --changes in chemical metabolic reactions. ***cell may have enough reserves to hold off attack! The extent of damage to energy production (atp) The extent of impairment of cell membrane function. Changes can be microscopic***only late changes are detectable. Allows cell to escape or prevent injury. Adapted cell is neither normal or injured. Abnormal changes in cell size, shape and organization. Reversible replacement of mature cell with less differentiated cells. Prolonged exposure to stimulus may result in dysplasia and cancer. May see abnormal cardiac rhythms when blood flow reestablished after an mi. Decrease in atp, causing failure of sodium-potassium pump and sodium-calcium exchange. Cell may rupture releasing intracellular enzymes and cellular products. Electrically uncharged atom or group of atoms having an unpaired electron. In trying to stabilize electrical environment donates or takes electron from another molecule.
