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Karnataka Board PUCPUC Science Class 11

What is the significance of vital capacity? - Biology

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Question

What is the significance of vital capacity?

One Line Answer

Solution

It promotes the act of supplying fresh air and getting rid of foul air, thereby increasing the gaseous exchange between the tissues and the environment.

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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 1 | 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 total volume of air accommodated in the lungs at the end of forced inspiration is known as Total Lung Capacity (TLC) which is equal to ______. 


Vital capacity of lungs is equal to


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


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


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Functional Residual Capacity (FRC) = ERV + ______.


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


Differentiate between inspiratory and expiratory reserve volume


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