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Karnataka Board PUCPUC Science Class 11

State the volume of air remaining in the lungs after a normal breathing. - Biology

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Question

State the volume of air remaining in the lungs after a normal breathing.

Answer in Brief
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Solution

The amount of air that remains in the lungs after normal exhalation is called structural composition. This exhalation is like the combination of celestial air and flowing air. Its normal quantity is 2300 ml.

FRC = ERV + RV

= 1100 + 1200 ml

= 2300 ml.

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Chapter 17: Breathing and Exchange of Gases - Exercises [Page 277]

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NCERT Biology [English] Class 11
Chapter 17 Breathing and Exchange of Gases
Exercises | Q 2 | Page 277

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RELATED QUESTIONS

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


Distinguish between IRV and ERV.


Distinguish between inspiratory capacity and expiratory capacity.


Distinguish between Vital capacity and Total lung capacity.


The vital capacity of the lungs is ______.


A person breathes in some volume of air by forced inspiration after having a forced expiration. This quantity of air taken in is ______.


From the following relationships between respiratory volume and capacities and mark the correct answer.

  1. Inspiratory capacity (IC) = Tidal Volume + Residual Volume
  2. Vital Capacity (VC) = Tidal Volume (TV) + Inspiratory Reserve Volume (IRV) + Expiratory Reserve Volume (ERV).
  3. Residual Volume (RV) = Vital Capacity (VC) – Inspiratory Reserve Volume (IRV)
  4. Tidal Volume (TV) = Inspiratory Capacity (IC) – Inspiratory Reserve Volume (IRV)

Define the following terms?

Tidal volume


Define the following terms?

Residual volume


Arrange the following terms based on their volumes in an ascending order.

  1. Tidal Volume (TV)
  2. Residual Volume (RV)
  3. Inspiratory Reserve Volume (IRV)
  4. Expiratory Capacity (EC)

Complete the missing terms

______ = TV + ERV


Complete the missing terms

Functional Residual Capacity (FRC) = ERV + ______.


Name the important parts involved in creating a pressure gradient between lungs and the atmosphere during normal respiration.


Match List I with List II.

List I List II
A. Expiratory capacity I. Expiratory reserve volume + Tidal volume + Inspiratory reserve volume
B. Functional residual Capacity II. Tidal volume + Expiratory reserve volume
C. Vital capacity III. Tidal volume + Inspiratory reserve volume
D. Inspiratory capacity IV. Expiratory reserve volume + Residual volume

Choose the correct answer from the options given below:


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