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Questions and Answers
Which two systems are required for respiration?
What is the process by which an organism meets its oxygen requirements and eliminates carbon dioxide?
What is the non-respiratory function of the respiratory system?
What is the intracellular metabolic process carried out within mitochondria that uses oxygen and produces carbon dioxide while deriving energy from nutrient molecules?
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Which process involves the exchange of oxygen and carbon dioxide between the external environment and tissue cells?
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Study Notes
Physiology of the Respiratory System: Homeostasis, Respiration, and Non-Respiratory Functions
- Homeostasis is the maintenance of stable chemical and physical conditions in the internal fluid environment of the body.
- Respiration is the process by which an organism meets its oxygen (O2) requirements and eliminates carbon dioxide (CO2).
- Respiration requires two systems: the blood circulatory system and the respiratory system.
- Respiration encompasses two processes: cellular respiration, which occurs within mitochondria and uses O2 and produces CO2 to derive energy from nutrients, and external respiration, which involves the exchange of O2 and CO2 between the external environment and tissue cells.
- The respiratory system also has non-respiratory functions, including being a route of water loss, enhancing venous return, maintaining normal acid-base balance (by generating CO2 that can decrease blood pH), enabling vocalization, defending against inhaled foreign matter, and removing, modifying, activating, and inactivating various materials.
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Description
Test your knowledge of the physiology of the respiratory system and its role in maintaining homeostasis. Explore the processes of respiration and the coordination between the circulatory and respiratory systems.
