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Questions and Answers
What is pulmonary ventilation?
What is pulmonary ventilation?
Inspiration (air in) & expiration (air out) in response to changes of O2 & CO2 in blood.
What is external respiration?
What is external respiration?
Exchange of O2 and CO2 between alveoli and blood in the pulmonary capillaries.
What is the transport of respiratory gases?
What is the transport of respiratory gases?
Occurs when blood transports CO2 to the lungs and O2 to the body cells.
What is internal respiration?
What is internal respiration?
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Study Notes
Respiration Processes
- Pulmonary ventilation, also known as breathing, involves two phases: inspiration (intake of air) and expiration (release of air). This process is regulated by the fluctuations in oxygen (O2) and carbon dioxide (CO2) levels in the blood.
External Respiration
- External respiration refers to the gas exchange that occurs in the lungs, specifically between the alveoli (tiny air sacs) and the blood in the pulmonary capillaries, facilitating oxygen intake and carbon dioxide removal.
Transport of Respiratory Gases
- The transport of respiratory gases is crucial as the blood circulates, transferring CO2 from body tissues to the lungs for exhalation and delivering O2 from the lungs to body cells, supporting cellular respiration.
Internal Respiration
- Internal respiration is the process whereby oxygen and carbon dioxide are exchanged at the cellular level. This occurs between body cells and blood circulating in body capillaries, enabling cells to obtain oxygen and eliminate carbon dioxide produced during metabolism.
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