Respiratory volumes and capacitiesश्वसन आयतन और क्षमताएँ

NCERT Section 14.2.1 · interactive diagram

Parts and their functions

• IRV (IRV) — Inspiratory reserve volume: extra air by forcible inspiration, 2500–3000 mL.
• Tidal volume (ज्वारीय आयतन) — Air inspired or expired in normal breathing, ≈ 500 mL.
• ERV (ERV) — Expiratory reserve volume: extra air by forcible expiration, 1000–1100 mL.
• Residual volume (अवशिष्ट आयतन) — Air left after forcible expiration, 1100–1200 mL.
• Inspiratory capacity (अंतःश्वसन क्षमता) — TV + IRV.
• Functional residual capacity (क्रियात्मक अवशिष्ट क्षमता) — ERV + RV — air left after a normal expiration.
• Vital capacity (जैव क्षमता) — IRV + TV + ERV — maximum air breathed in after forced expiration.
• Total lung capacity (कुल फेफड़ा क्षमता) — VC + RV.

Original diagram drawn by Simple Learning Hub, based on NCERT Section 14.2.1. Report a mistake