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This figure represents Atmospheric pressure (Patm) = 760 mmHg Thoracic walI 756 760 Lung Diaphragm Alveolar pressure (Palv) O mid-expiration O mid-inspiration O the end of expiration O the end of inspiration

This figure represents Atmospheric pressure (Patm) = 760 mmHg Thoracic walI 756 760 Lung Diaphragm Alveolar pressure (Palv) O mid-expiration O mid-inspiration O the end of expiration O the end of inspiration

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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**QUESTION 13** This figure represents ____. *Diagram of the human respiratory system showing pressure changes during the respiratory cycle.* ![Respiratory System Diagram](URL) **Explanation of Diagram:** - The image shows a cross-section of the human thoracic cavity focusing on the lungs and diaphragm. - It highlights various pressures associated with respiration. - **Label A** represents the alveolar pressure (P_alv) in the lungs, marked as 760 mmHg which is equal to atmospheric pressure (P_atm). - **Label B** points to another area measured at 760 mmHg, indicating different phases during the respiratory cycle. - **Label C** is connected to the intrapleural pressure, which is slightly negative, marked at 756 mmHg. - **Label D** shows the inner thoracic wall. - **Label E** points to the visceral pleura. - **Label F** indicates the parietal pleura. - **Label G** shows the trachea. **Atmospheric pressure (P_atm):** 760 mmHg **Key components of the diagram:** - **Thoracic Wall:** The outer structure enclosing the thoracic cavity. - **Lung:** Organ involved in the process of respiration. - **Diaphragm:** Muscle that plays a critical role in breathing by contracting and relaxing. - **Alveolar Pressure (P_alv):** The pressure within the alveoli of the lungs, which is equal to the atmospheric pressure (760 mmHg) at the point of measurement in this diagram. **Options for the phase represented by the figure:** 1. mid-expiration 2. mid-inspiration 3. the end of expiration 4. the end of inspiration
Transcribed Image Text:**QUESTION 13** This figure represents ____. *Diagram of the human respiratory system showing pressure changes during the respiratory cycle.* ![Respiratory System Diagram](URL) **Explanation of Diagram:** - The image shows a cross-section of the human thoracic cavity focusing on the lungs and diaphragm. - It highlights various pressures associated with respiration. - **Label A** represents the alveolar pressure (P_alv) in the lungs, marked as 760 mmHg which is equal to atmospheric pressure (P_atm). - **Label B** points to another area measured at 760 mmHg, indicating different phases during the respiratory cycle. - **Label C** is connected to the intrapleural pressure, which is slightly negative, marked at 756 mmHg. - **Label D** shows the inner thoracic wall. - **Label E** points to the visceral pleura. - **Label F** indicates the parietal pleura. - **Label G** shows the trachea. **Atmospheric pressure (P_atm):** 760 mmHg **Key components of the diagram:** - **Thoracic Wall:** The outer structure enclosing the thoracic cavity. - **Lung:** Organ involved in the process of respiration. - **Diaphragm:** Muscle that plays a critical role in breathing by contracting and relaxing. - **Alveolar Pressure (P_alv):** The pressure within the alveoli of the lungs, which is equal to the atmospheric pressure (760 mmHg) at the point of measurement in this diagram. **Options for the phase represented by the figure:** 1. mid-expiration 2. mid-inspiration 3. the end of expiration 4. the end of inspiration
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