18 Questions
What is the concept that explains how a system maintains internal stability while adjusting to changing external conditions?
Homeostasis
Who formulated the concept of homeostasis and applied control theory to explain how a constant internal environment is achieved?
Walter Cannon
What is the primary goal of homeostasis in a living organism?
To maintain internal stability
What is the term used to describe the balance between the body humors in ancient Greek medicine?
Balance of Humors
What is the name of the French physiologist who introduced the concept of 'milieu intérieur'?
Claude Bernard
What is the term used to describe the application of control systems to explain how a constant internal environment is achieved?
Control Theory
What is the primary purpose of negative feedback in homeostasis?
To maintain a stable range of values in the internal environment
What is the characteristic of a feedback system?
It is a closed-loop structure
What is the main difference between negative and positive feedback systems?
One seeks a goal, while the other produces growth processes
What is the purpose of physiological investigations?
To understand the organism as a single functional entity
What is the quotation 'Nam deteriores omnes sumus licentiate' trying to convey?
The importance of control in an organism
What is the term for the ability of an organism to maintain a stable internal environment?
Homeostasis
What is the primary function of negative feedback regulation in maintaining blood pressure?
To buffer against transitory changes and maintain a stable blood pressure
What is the limitation of the simple negative feedback schema described in the preceding paragraph?
It cannot convey the complexity of the homeostatic process
What happens to the operating point of the negative feedback regulation in response to changing environmental conditions?
It is adjusted or overridden by higher levels of control
What is the term for the hierarchical control system that allows an organism to adapt to changing environmental conditions?
Multi-level multi-goal seeking system
According to Figure 10.7, what is the first level of the hierarchical control system?
Physiochemical processes and organ functions
What is the result of the hierarchical control system in terms of adaptation to changing environmental conditions?
A finer level of control and greater flexibility
Learn about the importance of maintaining internal physiochemical conditions through negative and positive feedback systems. Understand how homeostasis is achieved in living organisms.
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