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Which of these images best illustrates changes in lung function caused by acute asthma? Choose from the following: (A) (1) (B) (2) (C) (3)

Which of these images best illustrates changes in lung function caused by acute asthma? Choose from the following: (A) (1) (B) (2) (C) (3)

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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Which of these images best illustrates changes in lung function caused by acute asthma?

Choose from the following:

(A) (1)
(B) (2)
(C) (3)
The image contains a series of graphs and spirometry test results relevant to pulmonary function testing. ### Top Row: Forced Expiration Graphs 1. **Normal Forced Expiration:** - The first graph shows a normal forced expiration curve. - FEV₁ (Forced Expiratory Volume in 1 second) = 4.0 L - FVC (Forced Vital Capacity) = 5.0 L - FEV₁/FVC ratio = 80% 2. **Forced Expiration with Obstruction:** - The next two graphs depict reduced FEV₁ and FEV₁/FVC ratios, indicating obstructive lung disease. - Second graph: FEV₁ = 1.2 L, FVC = 3.0 L, FEV₁/FVC = 40% - Third graph: FEV₁ = 2.7 L, FVC = 3.0 L, FEV₁/FVC = 90% ### Middle Row: Compliance Curves 1. **Normal Compliance Curve:** - Total Lung Capacity (TLC) = 6 L - Residual Volume (RV) = 2 L 2. **Increased Compliance Curve:** - Indicates an increase in lung compliance, suggesting emphysema. - TLC = 6.5 L, RV = 3 L - "Same as normal; 15 most distensible., as it often seen in emphysema." 3. **Decreased Compliance Curve:** - Reflects decreased lung compliance, characteristic of restrictive lung disease. - TLC = 3 L, RV = 1 L ### Bottom Row: Spirograms 1. **Normal Spirogram:** - Shows normal inspiratory and expiratory volumes. - Includes: - IRV (Inspiratory Reserve Volume) - TV (Tidal Volume) - ERV (Expiratory Reserve Volume) - RV (Residual Volume) 2. **Spirograms with Abnormal Patterns:** - Each spirogram demonstrates different pathological patterns of lung volume distribution. - (1): Similar to normal, possibly obstructive pattern. - (2): Shows reduced IRV and ERV, suggesting restricted lung volumes. - (3): Greatly reduced IRV, ERV, and overall volume, typical of significant restrictive
Transcribed Image Text:The image contains a series of graphs and spirometry test results relevant to pulmonary function testing. ### Top Row: Forced Expiration Graphs 1. **Normal Forced Expiration:** - The first graph shows a normal forced expiration curve. - FEV₁ (Forced Expiratory Volume in 1 second) = 4.0 L - FVC (Forced Vital Capacity) = 5.0 L - FEV₁/FVC ratio = 80% 2. **Forced Expiration with Obstruction:** - The next two graphs depict reduced FEV₁ and FEV₁/FVC ratios, indicating obstructive lung disease. - Second graph: FEV₁ = 1.2 L, FVC = 3.0 L, FEV₁/FVC = 40% - Third graph: FEV₁ = 2.7 L, FVC = 3.0 L, FEV₁/FVC = 90% ### Middle Row: Compliance Curves 1. **Normal Compliance Curve:** - Total Lung Capacity (TLC) = 6 L - Residual Volume (RV) = 2 L 2. **Increased Compliance Curve:** - Indicates an increase in lung compliance, suggesting emphysema. - TLC = 6.5 L, RV = 3 L - "Same as normal; 15 most distensible., as it often seen in emphysema." 3. **Decreased Compliance Curve:** - Reflects decreased lung compliance, characteristic of restrictive lung disease. - TLC = 3 L, RV = 1 L ### Bottom Row: Spirograms 1. **Normal Spirogram:** - Shows normal inspiratory and expiratory volumes. - Includes: - IRV (Inspiratory Reserve Volume) - TV (Tidal Volume) - ERV (Expiratory Reserve Volume) - RV (Residual Volume) 2. **Spirograms with Abnormal Patterns:** - Each spirogram demonstrates different pathological patterns of lung volume distribution. - (1): Similar to normal, possibly obstructive pattern. - (2): Shows reduced IRV and ERV, suggesting restricted lung volumes. - (3): Greatly reduced IRV, ERV, and overall volume, typical of significant restrictive
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