2 years ago

What is the difference between Lung Volumes and Capacities? This video covers the medical definitions and provides a brief overview of this topic.
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➡️ Lung Volumes
Lung volumes refer to discrete, measurable segments of air that can be associated with a specific phase of the breathing cycle. The four primary lung volumes include:

-- Tidal Volume (VT): The volume of air inhaled or exhaled during a normal, resting breath.
-- Inspiratory Reserve Volume (IRV): The additional volume of air that can be forcefully inhaled after a normal inhalation.
-- Expiratory Reserve Volume (ERV): The additional volume of air that can be forcefully exhaled after a normal exhalation.
-- Residual Volume (RV): The amount of air remaining in the lungs after a maximal exhalation. This volume ensures that gas exchange can continue between breaths and maintains lung elasticity.

➡️ Lung Capacities
Lung capacities are combinations of two or more lung volumes. The primary lung capacities include:

-- Inspiratory Capacity (IC) The total volume of air that can be inhaled after a normal exhalation.
-- Functional Residual Capacity (FRC): The volume of air exhaled after a normal tidal volume breath in addition to the volume remaining in the lungs after maximum exhalation.
-- Vital Capacity (VC): The total volume of air that can be forcefully exhaled after a maximal inhalation. This capacity gives insight into the overall health and function of the respiratory muscles.
-- Total Lung Capacity (TLC): The total volume of the lungs when fully expanded; the sum of all lung volumes.

Lung volumes and capacities are fundamental concepts in respiratory physiology, offering deep insights into the function and potential of the human lungs. While volumes provide discrete measures during different phases of respiration, capacities represent combined functional segments.

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🚑MEDICAL DISCLAIMER
This content is for educational and informational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Please consult with a physician with any questions that you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you watch in this video. We strive for 100% accuracy, but errors may occur, and medications, protocols, and treatment methods may change over time.

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⏰TIMESTAMPS
0:00 - Intro
0:32 - Lung Volumes
0:46 - Tidal Volume (VT)
0:53 - Inspiratory Reserve Volume (IRV)
1:02 - Expiratory Reserve Volume (ERV)
1:10 - Residual Volume (RV)
1:25 - Lung Capacities
1:35 - Inspiratory Capacity (IC)
1:50 - Functional Residual Capacity (FRC)
2:09 - Vital Capacity (VC)
2:33 - Total Lung Capacity (TLC)