BIOL 250 Lecture Notes - Lecture 1: Mitosis, Cellular Adaptation, Hematology
Document Summary
Disease: an interruption, cessation, or disorder of a body system or organ structure, usually develops after significant changes occur in the body, leading to a state in which homeostasis cannot be maintained. Homeostasis: dynamic steady state, as the body attempts to maintain a balance in the presence of continual environmental variation. Pathogenesis: development or evolution of an illness or condition. Cellular events that lead from the cause to the full expression of the disease: will vary with causative agent, time, quantity, location. Manifestations: characteristic consequences of the disease process, clinical manifestations include signs and symptoms. Signs= objective perceptions (can be measured) e. g. , swelling, discoloration, fever. Symptoms= subjective perceptions (patient"s feelings) e. g. , pain, nausea, dizziness. Syndrome: a compilation of signs and symptoms (e. g. , chronic fatigue syndrome) that are characteristic of a specific disease state. Diagnosis: identification of a disease or condition by a evaluation of physical signs, symptoms, history, laboratory tests and procedures, laboratory test results: urinalysis, x-ray, cat scans, mri.
