UPSC CDS/OTA

Respiratory System

General Studies

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Respiratory System

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Questions

30

Time

30 min

Marks

30

Solutions

All inline

Q1Consider the following statements about the human respiratory system: 1. The primary muscle responsible for inspiration is the diaphragm. 2. During normal expiration, the process is passive due to the elastic recoil of the lungs. 3. Residual volume can be measured using a spirometer. Which of the statements given above is/are correct?MediumSolve →Q2Which one of the following pairs is correctly matched?MediumSolve →Q3Which of the following statements is correct about alveoli? 1. They are lined with a single layer of squamous epithelium. 2. They are richly supplied with blood capillaries. 3. Surfactant produced by alveolar cells reduces surface tension. Select the correct answer:MediumSolve →Q4Which one is NOT a part of the upper respiratory tract?MediumSolve →Q5Consider the following regarding the exchange of gases: 1. Oxygen diffuses from alveoli into pulmonary capillaries. 2. CO₂ diffuses from tissues into tissue capillaries. 3. Partial pressure gradients drive the diffusion process. Which is/are true?MediumSolve →Q6What happens when the CO₂ concentration in blood increases?MediumSolve →Q7Which part of the brain controls the basic rhythm of breathing?MediumSolve →Q8The Bohr effect is related to:MediumSolve →Q9Which structure prevents food from entering the trachea?MediumSolve →Q10Total lung capacity equals:MediumSolve →

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