USMLE Step 1 || Respiratory System (Physiology) Lecture 1 (First Aid Only) بالعربي

Описание: Understanding lung volumes and capacities is crucial for medical students and USMLE Step 1 preparation. In this video, we’ll break down the essential concepts from First Aid for the USMLE Step 1, explaining:

✅ Lung Volumes:
Tidal Volume (Vt): The air you breathe in and out during normal respiration.
Inspiratory Reserve Volume (IRV): The extra air you can inhale beyond a normal breath.
Expiratory Reserve Volume (ERV): The additional air you can exhale after a normal breath.
Residual Volume (RV): The air that remains in your lungs after a maximal exhalation (cannot be measured by spirometry).

✅ Lung Capacities (Combinations of Volumes):
Inspiratory Capacity (IC) = IRV + Vt
Functional Residual Capacity (FRC) = RV + ERV
Vital Capacity (VC) = IRV + Vt + ERV
Total Lung Capacity (TLC) = IRV + Vt + ERV + RV
We’ll also cover:
📌 The physiological importance of these volumes and how they relate to pulmonary function tests (PFTs).
📌 How to interpret the lung volume graph and its clinical significance.
📌 High-yield USMLE questions related to lung volumes and capacities.

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