Physiology: Organ Systems and Homeostasis

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6 Questions

Which type of questions does the function aspect of organ systems explore?

Why questions

What does the concept of homeostasis aim to maintain?

A relatively stable internal environment

What do negative feedback loops in control systems aim to do?

Stabilize the variable around the setpoint

In reflex pathways, what does the feedback loop influence?

The input

What type of environment is the extracellular fluid (ECF) buffering between?

Living cells and the outside world

What distinguishes a dynamic steady state from an equilibrium state?

It is constantly changing

Study Notes

Organ Systems and Homeostasis

  • The function aspect of organ systems explores the question of how they maintain homeostasis.


  • Homeostasis aims to maintain a constant internal environment despite changes in the external environment.

Control Systems

  • Negative feedback loops in control systems aim to correct deviations from a set point, returning the system to a stable state.

Reflex Pathways

  • In reflex pathways, the feedback loop influences the response to a stimulus.

Extracellular Fluid (ECF)

  • The extracellular fluid (ECF) buffers between the internal environment of the body and the external environment.

Dynamic Steady State vs Equilibrium State

  • A dynamic steady state is distinguished from an equilibrium state in that it requires continuous energy expenditure to maintain a stable state.

Explore the functions and mechanisms of organ systems as studied by physiologists. Understand the concept of homeostasis and the maintenance of a stable internal environment. Learn about the dynamic steady state in physiological systems.

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