The amount of air that is left in the lungs after maximum exhalation is called as:
1. Expiratory reserve volume
2. Functional residual capacity
3. Expiratory capacity
4. Residual volume
The partial pressure of oxygen in systemic circulation [oxygenated blood pumped by aorta] is about:
1. 104 mm Hg
2. 100 mm Hg
3. 95 mm Hg
4. 40 mm Hg
The oxy-hemoglobin dissociation curve will shift to right in all the following conditions except:
1. Increased pH
2. Increased carbon dioxide
3. Increased temperature
4. Presence of 2,3 DPG
The maximum amount of carbon dioxide in the blood is transported as:
1. Carbaminohemoglobin
2. Carboxyhemoglobin
3. Bicarbonate
4. Dissolved state in plasma
The respiratory rhythm center in humans in present in:
1. Pons varolii
2. Aortic and carotid bodies
3. Apex of the lungs
4. Medulla oblongata
In prematurely born infants, hyaline membrane disease is associated with inadequate production of _________ by _________ cells.
1. lysozyme; mucous gland
2. mucin; goblet
3. glycoproteins; alveolar type I
4. surfactant; alveolar type II
Which of the following result from the presence of free air in the pleural cavity?
1. pneumothorax and atelectasis
2. hydrothorax and hemothorax
3. empyema and emphysema
4. all of the above
Asthma is most similar to ____________ localized in the bronchi and bronchioles.
1. an immune response
2. a pulmonary embolism
3. acute bronchitis
4. pneumonia
In glycolysis, electrons are removed by
1. ATP
2. glyceraldehydes-3-phosphate
3. NAD+
4. molecular oxygen
Last electron acceptor in respiration is
1. Oxygen
2. Hydrogen
3. Carbon dioxide
4. NADH
The number of correct statements amongst the given statements is:
I. Gills are used by most of the aquatic arthropods and mollusks.
II. Expiration takes place when intra-pulmonary pressure is higher than the atmospheric pressure.
III. Total volume of air a person can expire after normal inspiration is called as expiratory capacity.
IV. About 7 % of carbon dioxide is carried in dissolved state through plasma.
V. Every 100 ml of blood delivers approximately 4 ml of carbon dioxide to the alveoli.
1. 2
2. 3
3. 4
4. 5
In the given diagram of a section of an alveolus with a pulmonary capillary, the basement substance would be present in the region shown by the letter:
1. A
2. B
3. C
4. D
Match each item in Column I with one in Column II and choose your answer from the codes given below:
Location Partial pressure of oxygen
A. Atmospheric air a. 159 mm Hg
B. Alveoli b. 95 mm Hg
C. Deoxygenated blood c. 104 mm Hg
D. Oxygenated blood d. 40 mmHg
A. B. C. D.
1. a c b d
2. b c a d
3. a b c d
4. a c d b
The thoracic chamber is formed dorsally by the ______, ventrally by the _______, laterally by the ______ and inferiorly by the ________.
1. Sternum, Vertebral Column, Ribs, Diaphragm
2. Sternum, Vertebral Column, Diaphragm, Ribs
3. Vertebral Column, Sternum, Ribs, Diaphragm
4. Vertebral Column, Sternum, Diaphragm, Ribs
On the basis of the RQ values, arrange the given respiratory substrates in descending order.
A. Glucose B. Oxalic acid
C. Tripalmitin D. Protein
1. B > A > D > C
2. A > B > D > C
3. B > C > A > D
4. C > B > A > D