Breathing and respiration: mechanism, exchange and transport of gases, volumes, disorders
Top questions
See all →- Match List - I with List - II.List - I: A. Emphysema; B. Angina Pectoris; C. Glomerulonephritis; D. TetanyList - II: I. Rapid spasms in muscle due to low Ca++ in body fluid; II. Damaged alveolar walls and decreased respiratory surface; III. Acute che… Answer: 4. A-II, B-III, C-IV, D-I Emphysema: damaged alveolar walls, less respiratory surface (II) Angina pectoris: acute chest pain when th... 1
- Match List I with List II :List I:A. Expiratory capacityB. Functional residual capacityC. Vital capacityD. Inspiratory capacityList II:I. Expiratory reserve volume + Tidal volume + Inspiratory reserve volumeII. Tidal volume + Expiratory reserve volum… Answer: 2. A-II, B-IV, C-I, D-III Key idea: capacities are sums of volumes. Expiratory capacity = TV + ERV (A-II). Functional residual capac... 1
- Which of the following factors are favourable for the formation of oxyhaemoglobin in alveoli? Answer: 3. High pO₂ and Lesser H^+ concentration Key idea: oxygen binding is favoured in the alveoli. Alveoli have high pO₂, low pCO₂, lower... 1
- Vital capacity of lung is ________. Answer: 1. IRV + ERV + TV Key idea: Vital capacity is the maximum air that can be breathed out after a maximum inspiration. VC = ERV + TV +... 1
- Which of the following is not the function of conducting part of respiratory system ? Answer: 1. Provides surface for diffusion of O₂ and CO₂ Key idea: The conducting part (nose to terminal bronchioles) carries air, but gas ex... 1
- Under normal physiological conditions in human being every 100 ml of oxygenated blood can deliver ______ ml of O_2 to the tissues. Answer: 3. 5 ml Key idea: Oxygenated blood has about 20 ml O₂ per 100 ml and deoxygenated blood about 15 ml per 100 ml. Delivered to tissues... 1