PGY 206 Study Guide - Midterm Guide: Vascular Smooth Muscle, Celiac Ganglia, Myelin

• School: University of Kentucky
• Department: Physiology
• Course: PGY 206
• Professor: Dexter Speck

Document Summary

While the scientific method is investigative science, physiology is a form of integrative science defined as the study of how living organisms work (function). Defined as the required stability of our internal environment: control mechanisms, variable: factor being regulated, sensor (receptor): detects changes in environment from a specific set of point. Integrating center: receives information from the sensors and makes decisions on tasks: effectors: makes changes based off information received from integrating center, negative feedback. Change in variable leading to responses that move the variable in the opposite direction of the initial change. Variable sensor integrating center effector variable: examples. Thermostat: default at 70 f increased temperature detected by sensor within thermostat integrating center activates effectors to kick on ac decrease temperature back to default: positive feedback. Change in variable leading to responses that move the variable in the same direction of the initial change. Variable sensor integrating center effector variable. Weirdly, positive feedback can eventually lead to death.