BIOL 207 Lecture Notes - Lecture 4: Central Nervous System, Dynamic Equilibrium, Homeostasis

• School: UMass Boston
• Department: Biology
• Course: BIOL 207
• Professor: Guimond Robert

Document Summary

3 4: right upper quadrant 3) right lower quadrant, left upper quadrant, left lower quadrant. 1condition in which, within limits, the body s internal environment (milieu interior) remains relatively constant. 2state of dynamic equilibrium of the internal environment. System: cerebral spinal fluid of central nervous system. Stress: any stimulus or circumstance that creates an imbalance in the normal internal environment. 1control or regulatory mechanisms that oppose the forces of stress and bring the internal environment back into balance. Main components: receptors: monitors and detects the change and sends signal to control center, control center: determines set point and signals effector to start and stop, effector: something that will bring about change. Stimulus -> receptor -> input -> control center -> output -> effector. Types of homeostatic mechanisms for imbalance: negative feedback: stops production, positive feedback: accelerates production. Cells -> tissues -> organs -> organ systems. Cell: smallest structural and functional unit of the body.