Question 11 of 11intermediate🔧 ApplyNumerical2 marks

What is Tidal volume? Find out the Tidal volume (approximate value) for a healthy human in an hour.

Correct Answer

Tidal Volume (TV) is defined as the volume of air inspired or expired during a normal respiration. The approximate value of Tidal Volume for a healthy human is 500 mL.

To find the Tidal volume for a healthy human in an hour: Step 1: Calculate the volume of air moved per minute. As stated in the text, a healthy man can inspire or expire approximately 6000 to 8000 mL of air per minute.

Step 2: Calculate the volume for one hour (60 minutes).

  • Lower limit: 6000 mL × 60 = 360,000 mL (or 360 Litres).
  • Upper limit: 8000 mL × 60 = 480,000 mL (or 480 Litres).

Therefore, the approximate Tidal volume for a healthy human in an hour is 360 to 480 Litres.

Exercise: EXERCISES | Q: 14
For More Understanding

Explanation

The answer is derived directly from the provided context under 'Respiratory Volumes and Capacities'. The definition of Tidal Volume is explicitly stated as the volume of air inspired or expired during normal respiration, approximated at 500 mL. The calculation for the hourly volume uses the minute ventilation range (6000-8000 mL) provided in the text, which is based on a breathing rate of 12-16 times per minute multiplied by the tidal volume.

Solution Steps

  1. Step 1: Identify Tidal Volume (TV) from text: 500 mL.

  2. Step 2: Identify Minute Volume from text: 6000 to 8000 mL per minute.

  3. Step 3: Multiply Minute Volume by 60 minutes to find Hourly Volume.

  4. Step 4: Calculate range: 6000 mL x 60 = 360,000 mL and 8000 mL x 60 = 480,000 mL.

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