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Biology
Breathing and Exchange of Gases
53 questions from 29 papers, each with its answer.
- 53 questions
- 29 papers
- 1.5% of Biology
Respiratory volumes and total lung capacity
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The total Lung Capacity (TLC) is the total volume of air accommodated in the lungs at the end of a forced inspiration. This includes:Total Lung Capacity (TLC) is the sum of all four primary lung volumes: Residual Volume (RV), Expiratory Reserve Volume (ERV), Tidal Volume (TV) and Inspiratory Reserve Volume (IRV).
Regulation and physiology of respiration
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Match the following columns and select the correct option:
Pick the matching item from Column II for each row.
Column I
- a. Pneumotaxic Centre
- b. O2 Dissociation curve
- c. Carbonic Anhydrase
- d. Primary site of exchange of gases
Column II
- i. Alveoli
- ii. Pons region of brain
- iii. Haemoglobin
- iv. R.B.C.
Correct answer: a → ii, b → iii, c → iv, d → i
Pneumotaxic Centre is located in the pons region of the brain (a-ii); the $O_2$ Dissociation curve pertains to haemoglobin (b-iii); Carbonic Anhydrase is found in RBCs (c-iv); the primary site of exchange of gases is the alveoli (d-i).
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