Physiology Exam 1 question n answers rated A+ 2023

Physiology Exam 1Physiology - correct answer The study of how living organisms work T or F: All is known. - correct answer False What is responsible for function and integration, meaning body parts work together at various levels of organization and whole organism? - correct answer Physiology Aristotle - correct answer Speculated on function of human body; Good health associated with balance of humours Erasistratrus - correct answer Father of Physiology; Applied physical laws to study of human body; Studied cardiovascular and nervous systems William Harvey - correct answer First to study biology quantitatively - first to describe parts and their functions Claude Bernard - correct answer Father of MODERN Physiology; Observed the millieu interieur remained remarkably constant despite constantly changing external environment Robley Dunglison - correct answer Father of AMERICAN Physiology; Teaching was an explanation of "successive theories" Homeostasis - correct answer Maintenance of a relatively stable internal environment (State of equilibrium of the body's internal environment) What is the reason for regulatory mechanisms? - correct answer Homeostasis How is the maintenance of homeostasis accomplished? - correct answer Feedback Mechanisms Control systems that promote homeostasis are characterized by what 3 interdependent components? - correct answer Receptor, Control or integrating center and Effector Why is it referred to as a feedback "loop"? - correct answer It is continuous and never stops. Set Point - correct answer Normal range of measurements and values Variable - correct answer Factor or event bring regulated Is our internal environment absolutely constant? - correct answer No Are we always in a state of balance? - correct answer No, but we try to stabilize around a set point. Negative Feedback Mechanism - correct answer Most common homeostatic control mechanism that works by output of system causing a decrease or shuts off the original stimulus What is the goal of negative feedback mechanisms? - correct answer Preventing sudden severe changes in the body Antagonistic Effectors - correct answer Effectors that have antagonistic actions and allows for finer degree of control Positive Feedback Mechanism - correct answer Same direction control system that enhances or exaggerates the response over the original stimulus increasing the output; Proceed with very little control (i.e. Breastfeeding, blood clotting, child birth)