Question

The normal value of Tidal Volume (TV) in a healthy adult is approximately:

• A. \(500\ \text{mL}\)
• B. \(2500-3000\ \text{mL}\)
• C. \(1100-1200\ \text{mL}\)
• D. \(4500-5000\ \text{mL}\)

Hint:

Important lung volumes to remember: Tidal Volume (TV) ≈ 500 mL, Inspiratory Reserve Volume (IRV) ≈ 2500–3000 mL, Expiratory Reserve Volume (ERV) ≈ 1100–1200 mL.

Answer 1

The Correct Option is A

Step 1: Understanding the Question:
The question asks for the standard physiological value of Tidal Volume in a normal, healthy human being during quiet breathing.
Step 2: Detailed Explanation:
Tidal Volume (TV) is defined as the volume of air inspired or expired during a single normal breath.
In a healthy adult male, this volume is approximately \(500\ \text{mL}\).
A healthy man can inspire or expire approximately \(6000\) to \(8000\ \text{mL}\) of air per minute (Minutes Ventilation Rate = TV $\times$ Breathing Rate).
Step 3: Final Answer:
The approximate value is \(500\ \text{mL}\).