Respiratory Volumes and Capacities
Respiratory Volumes and Capacities
The quantity of air, the lungs can receive, hold or expel under different conditions are called respiratory (or pulmonary) volumes. Combination of two or more pulmonary volumes are called respiratory (pulmonary) capacities.
The different volumes and capacities are as follows :-
(i) Tidal Volume (TV) :-
It is the volume of air inspired or expired during normal breathing in relaxed or resting position. It is about 500 ml. It consists of 150 ml of dead space volume and 350 ml of alveolar volume. A healthy man can inspire or expire approximately 6000-8000 ml of air per minute.
(ii) Inspiratory Reserve Volume (IRV) :-
It is the additional amount of air that can be inspired forcibly after a normal inspiration. It is about 2500-3000 ml of air.
(iii) Expiratory Reserve Volume (ERV) :-
It is the additional volume of air that can be expired forcibly after a normal expiration. It is about 1000-1100 ml.
(iv) Residual Volume (RV) :-
It is the volume, of air remaining in the lungs even after a forcible expiration. It is about 1100-1200 ml. It cannot be measured by spirometry.
Various pulmonary capacities arc derived from the above mentioned volumes. These help in the clinical diagnosis of functioning of lungs. These are as follows
(i) Inspiratory Capacity (IC) :-
It is the total volume of air a person can inspire after a normal expiration. It is about 2500-3000 ml. It includes tidal volume and inspiratory reserve volume. IC = TV + IRV
(ii) Expiratory Capacity (EC) :-
It is the total volume of air a person can expire after a normal inspiration. It includes tidal volume and expiratory reserve volume.
EC = TV + ERV
(iii) Functional Residual Capacity (FRC) :-
It is the volume of air that will remain in the lungs after a normal expiration. It includes residual volume and expiratory reserve volume.
FRC = RV + ERV
(iv) Vital Capacity (VC) :-
It is the maximum volume of air a person can breathe in after a forced expiration or the maximum volume of air a person can breathe out after a forced inspiration. This includes -
TV + IRV + ERV.
It varies from 3400-4800 ml depending upon age, sex and height of individual.
(v) Total Lung Capacity :-
Students / Parents Reviews [20]
Abhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
Shreya Shrivastava
8thAbhyas academy is great place to learn. I have learnt a lot here they have finished my fear of not answering.It has created a habit of self studying in me.The teachers here are very supportive and helpful. Earlier my maths and science was good but now it has been much better than before.
Barkha Arora
10thWhen I have not joined Abhyas Academy, my skills of solving maths problems were not clear. But, after joining it, my skills have been developed and my concepts of science and SST are very well. I also came to know about other subjects such as vedic maths and reasoning.
Sharandeep Singh
7thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thUsually we see institutes offering objective based learning which usually causes a lag behind in subjective examinations which is the pattern followed by schools. I think it is really a work of planning to make us students grab the advantages of modes of examination, Objective Subjective and Onli...
Anika Saxena
8thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thAbhyas is an institute of high repute. Yogansh has taken admission last year. It creates abilities in child to prepare for competitive exams. Students are motivated by living prizes on basis of performance in Abhyas exams. He is satisfied with institute.
Yogansh Nyasi
7thAbhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are w...
Aman Kumar Shrivastava
10thThe experience was nice. I studied here for three years and saw a tremendous change in myself. I started liking subjects like English and SST which earlier I ran from. Extra knowledge gave me confidence to overcome competitive exams. One of the best institutes for secondary education.
Aman Kumar Shrivastava
10thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thWe started with lot of hope that Abhyas will help in better understnding of complex topics of highers classes. we are not disappointed with the progress our child has made after attending Abhyas. Though need to mention that we expected a lot more. On a scale of 1-10, we would give may be 7.
Manya
8thIn terms of methodology I want to say that institute provides expert guidence and results oriented monitering supplements by requsite study material along with regular tests which help the students to improve their education skills.The techniques of providing education helps the students to asses...
Aman Kumar Shrivastava
10thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thAbhyas is good institution and a innovative institute also. It is a good platform of beginners.Due to Abhyas,he has got knoweledge about reasoning and confidence.My son has improved his vocabulary because of Abhyas.Teacher have very friendly atmosphere also.
Manish Kumar
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
