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Breathing And Exchange Of Gases

142 Questions Start Allen Test
All Exams Allen
Q101 Allen 3. NCERT BASED QUESTIONS MCQ
A chemo sensitive area is situated adjacent to respiratory rhythm centre which is highly sensitive to and ions.
A.
$\mathsf { O } _ { 2 } , \mathsf { H } ^ { + }$
B.
${ \mathsf { C O } } _ { 2 } , { \mathsf { O H } } ^ { - }$
C.
${ \mathsf { C O } } _ { 2 } , { \mathsf { H } } ^ { + }$
D.
${ \mathsf { C O } } _ { 2 } , { \mathsf { O } } _ { 2 }$
Q102 Allen 3. NCERT BASED QUESTIONS MCQ
Label A, B, C and D in the diagram given below
A.
A–Nasopharynx, B–Oropharynx, C–Glottis, D–Gullet
B.
A–Nasopharynx, B–Oropharynx, C–Gullet, D–Glottis
C.
A–Oropharynx, B–Nasopharynx, C–Gullet, D–Glottis
D.
A–Oropharynx, B–Nasopharynx, C–Glottis, D–Gullet
Q103 Allen 3. NCERT BASED QUESTIONS MCQ
Chronic disorder in which alveolar wall are damaged due to which respiratory surface is decreased. One of the major causes of this is cigarette smoking :-
A.
Asthma
B.
Emphysema
C.
Bronchitis
D.
Fibrosis
Q104 Allen 3. NCERT BASED QUESTIONS MCQ
What is the correct about alveoli?
A.
Thin, irregular-walled and vascularised bag-like structures
B.
Thick, irregular-walled and vascularised bag-like structures
C.
Thin, regular-walled and vascularised bag-like structures
D.
Thick, regular-walled and vascularised bag-like structures
Q105 Allen 3. NCERT BASED QUESTIONS MCQ
Total volume of air accommodate in the lungs at the end of forced inspiration :-
A.
TV + IRV
B.
TV + IRV + ERV
C.
TV + ERV
D.
TV + IRV + ERV + RV
Q106 Allen 3. NCERT BASED QUESTIONS MCQ
Mark the true statement among the following with reference to normal breathing
A.
Inspiration is a passive process where as expiration is active
B.
Inspiration is a active process where as expiration is passive
C.
Inspiration and expiration are active processes
D.
Inspiration and expiration are passive processes
Q107 Allen 3. NCERT BASED QUESTIONS MCQ
A person breathes in some volume of air by forced inspiration after having a forced expiration. This quantity of air taken in is
A.
Total lung capacity
B.
Tidal volume
C.
Vital capacity
D.
Inspiratory capacity
Q108 Allen 3. NCERT BASED QUESTIONS MCQ
Mark the correct pair of muscles involved in the normal breathing in humans :-
A.
External and internal intercostal muscles
B.
Diaphragm and abdominal muscles
C.
Diaphragm and external intercostal muscles
D.
Diaphragm and internal intercostal muscles
Q109 Allen 3. NCERT BASED QUESTIONS MCQ
The diffusion membrane is made up of three major layers namely.
A.
The thin squamous epithelium of alveoli, the endothelium of alveolar capillaries and the basement substance in between them.
B.
The thick squamous epithelium of alveoli, the endothelium of alveolar capillaries and the basement substance in between them.
C.
The thin columnar epithelium of alveoli, the endothelium of alveolar capillaries and the basement substance in between them.
D.
The thin columnar and cuboidal epithelium of alveoli, the endothelium of alveolar capillaries and the basement substance in between them.
Q110 Allen 3. NCERT BASED QUESTIONS MCQ
Which of the following group of animals, is used lungs for respiration?
A.
Fishes, Frog, Tadpole larva
B.
Fish, Mollusca, aquatic arthropods
C.
Reptiles, Birds, Mammals
D.
Insects, Earthworm, Mollusca
Q111 Allen 4. ANALYTICAL QUESTIONS MCQ
Whether a child died after normal birth or died before birth can be confirmed by measuring :
A.
Tidal volume of air
B.
Residual volume of air
C.
The weight of the child
D.
The dead space air
Q112 Allen 4. ANALYTICAL QUESTIONS MCQ
Find the correct option for the diagram given below :
A.
A–Parietal pleura, B–Visceral pleura, C–Pleural cavity filled with pleural fluid
B.
A–Visceral pleura, B–Parietal pleura, C–Pleural cavity filled with pleural fluid
C.
A–Parietal pericardium, B–Visceral pericardium, C–Pleural cavity filled with pleural fluid
D.
A–Visceral pericardium, B–Parietal pericardium, C–Pleural cavity filled with pleural fluid
Q113 Allen 4. ANALYTICAL QUESTIONS MCQ
Which of the following statement is correct?
A.
Alveoli are the primary sites of exchange of gases
B.
Exchange of gases occur at tissue level and alveolar surface.
C.
Pressure contributed by an individual gas in a mixture of gases is called partial pressure and is represented as $pO_2$ for oxygen and $pCO_2$ for carbon dioxide.
D.
All of the above.
Q114 Allen 4. ANALYTICAL QUESTIONS MCQ
Identify A, B and C in the given sentence Inspiration is initiated by ______ A_____ of diaphragm which____ B ____the volume of thoracic chamber in _____C _____axis.
A.
A–relaxation, B–increases, C–antero posterior axis
B.
A–contraction, B–decreases, C–antero posterior axis
C.
A–contraction, B–increases, C–antero posterior axis
D.
A–relaxation, B–contraction, C–antero posterior axis
Q115 Allen 4. ANALYTICAL QUESTIONS MCQ
In lungs, there is definite exchange of ions between RBC and Plasma. Removal of CO₂ from blood involves :
A.
efflux of Cl⁻ ions from RBC.
B.
influx of Cl⁻ ions into RBC.
C.
influx of HCO₃⁻ ions into Plasma.
D.
efflux of HCO₃⁻ ions from RBC.
Q116 Allen 4. ANALYTICAL QUESTIONS MCQ
The chloride content of RBC will be higher than that of plasma in :-
A.
Systemic arteries and pulmonary veins.
B.
Systemic veins and pulmonary arteries.
C.
Systemic arteries and pulmonary arteries.
D.
Systemic veins and pulmonary veins.
Q117 Allen 4. ANALYTICAL QUESTIONS MCQ
Which of the following lung volumes or capacities can be measured by spirometer?
A.
Functional residual capacity [FRC]
B.
Residual volume
C.
Total lung capacity [TLC]
D.
Vital capacity
Q118 Allen 4. ANALYTICAL QUESTIONS MCQ
Which of the following statement is incorrect?
A.
A healthy man can inspire or expire approximately 6000 to 8000 ml of air per second.
B.
Total volume of air that can accommodated in the lungs at the end of forced inspiration is called total lung capacity.
C.
Total volume of air a person can expire after a normal inspiration is called expiratory capacity.
D.
Amount of air remain in lungs even after deep and forceful expiration is called residual volume of air.
Q119 Allen 4. ANALYTICAL QUESTIONS MCQ
The respiratory membrane facilitates the exchange of respiratory gases through diffusion. Oxygen enters the deoxygenated blood through diffusion because :-
A.
Partial pressure of oxygen in alveolar air and capillaries is 40 mm Hg and 104 mm Hg respectively.
B.
Partial pressure of oxygen in alveolar air and capillaries is 104 mm Hg and 40 mm Hg respectively.
C.
Partial pressure of oxygen in alveolar air and capillaries is 46 mm Hg and 40mm Hg respectively.
D.
Partial pressure of oxygen in alveolar air and capillaries is 40 mm Hg and 46 mm Hg respectively.
Q120 Allen 4. ANALYTICAL QUESTIONS MCQ
Blood do not become acidic although it carries CO₂ because :-
A.
CO₂ is continuously diffused through tissues.
B.
CO₂ combines with H₂O to form HCO₃⁻.
C.
In CO₂ transport, buffers plays an important role.
D.
CO₂ is absorbed by WBC.
Q121 Allen 4. ANALYTICAL QUESTIONS MCQ
The amount of CO₂ that can diffuse through the diffusion membrane per unit difference in partial pressure is much higher compared to that of O₂. Why?
A.
Because diffusion of gases takes place only at alveoli
B.
Because the solubility of CO₂ is 20-25 times lesser than that of O₂
C.
Because the solubility of CO₂ is 20-25 times higher than that of O₂
D.
Because alveoli are very large in number
Q122 Allen 4. ANALYTICAL QUESTIONS Match the Columns
Find out the correct match from the following table:
Match Column-I, Column-II and Column-III:
Column-IColumn-IIColumn-III
(A)At tissue
(B)In pulmonary vein
(C)In systemic artery
(D)In alveoli
(I)pO₂ = 40 mm Hg
(II)pO₂ = 95 mm Hg
(III)pO₂ = 40 mm Hg
(IV)pO₂ = 104 mm Hg
(P)pCO₂ = 45 mm Hg
(Q)pCO₂ = 50 mm Hg
(R)pCO₂ = 40 mm Hg
(S)pCO₂ = 40 mm Hg
A.
Both I and II
B.
Both III and IV
C.
I, II and III
D.
Both I and IV
Q123 Allen 4. ANALYTICAL QUESTIONS Match the Columns
Match the following Column-I with Column-II:
Column-IColumn-II
(A)Inspiratory capacity (IC)
(B)Expiratory capacity (EC)
(C)Functional residual capacity (FRC)
(D)Vital capacity (VC)
(I)Total air, a person can inspire after normal expiration
(II)Maximal volume of the air, a person can breathe in after a forced expiration
(III)Volume of the air that will remain in lungs after a normal expiration
(IV)Total volume of air a person can expire after a normal inspiration
A.
A-1, B-2, C-3, D-4
B.
A-1, B-4, C-3, D-2
C.
A-1, B-4, C-2, D-3
D.
A-4, B-1, C-3, D-2
Q124 Allen 4. ANALYTICAL QUESTIONS MCQ
Which of the following option gives correct information about the coverings of thoracic cage on various surfaces :-
A.
Anterior surface-Sternum and Ribs, Posterior surface-Ribs, Dorsal surface-Diaphragm
B.
Anterior surface-Sternum and Ribs, Posterior surface-Diaphragm, Dorsal surface-Clavicle bones and neck
C.
Anterior surface-Sternum and Ribs, Posterior surface-Vertebral column, Dorsal surface-Clavicle bones and neck
D.
Anterior surface-Clavicle bones and neck, Posterior surface-Diaphragm, Dorsal surface-Vertebral column
Q125 Allen 4. ANALYTICAL QUESTIONS MCQ
Considering the following labels for mentioned structures and select the correct sequence of their arrangement :- A = Terminal bronchioles B = Respiratory bronchioles C = Tertiary bronchi D = Primary bronchi E = Secondary bronchi F = Total pulmonary bronchioles
A.
D → E → C → F → A → B
B.
A → B → D → E → C → F
C.
C → F → A → B → D → E
D.
D → E → F → C → B → A