Q.1
Which is incorrect ? (C.B.S.E.2006)
  • a) Principle of counter - current flow facilitates efficient respiration in gills of fishes
  • b) Residual air in lungs slightly decreases the efficiency of respiration in mammals
  • c) Presence of nonrespiratory air sacs increases efficiency of respiration in birds
  • d) In insects, circulation body fluids serve to distribute oxygen to tissues
Q.2
Trachea is lined with incomplete rings of (D.P.M.T.1996)
  • a) Fibrous cartilage
  • b) Hyaline cartilage
  • c) Elastic cartilage
  • d) Calcified cartilage
Q.3
Make the correct pairs.
Columan-I Column-II
(a) IC i. Total volume of air inhaled by breathing
(b) EC ii. Volume of air present after expiration in lungs.
(c) VC iii. Volume of air inhaled after expiration.
(d) FRC iv. Volume of air exhaled after inspiration.
  • a) P - ii , Q - iii , R - iv , S - i
  • b) P - iii , Q - ii , R - iv , S - i
  • c) P - ii , Q - iv , R - iii , S - i
  • d) P - iii , Q - iv , R - i , S - ii
Q.4
Where Bicarbonate is converted into carbonic acid
  • a) In the areolar cavity of lungs
  • b) In the RBC of capillaries around the lungs
  • c) In the RBC of blood capillaries around body tissue.
  • d) In the body fluid
Q.5
H2 CO3 is converted into CO2 and H2O with the help of an enzyme known as
  • a) Carbonic anhydrase.
  • b) Carboxylase
  • c) Carbonic dehydrogenase
  • d) Carbonicenhydrase
Q.6
Which one protects the lungs? (B.H.U.1990)
  • a) Ribs
  • b) Vertebral column
  • c) Sternum
  • d) All the above
Q.7
During inhalation the following activities occur
  • a) Area of rib cage increases, diaphragm is pulled upwards
  • b) Area of rib cage reduces, diaphragm gets contracted
  • c) Area of rib cage reduces, diaphragm gets relaxed.
  • d) Area of rib cage increases, diaphragm is pulled downward
Q.8
Alveoli become enlarged and damaged with reduced surface area in heavy smokers. the condition is called (Kerala 2004)
  • a) Silicosis
  • b) Asthma
  • c) Emphysema
  • d) Bronchitis
Q.9
In human beings
  • a) Both lungs are of similar size.
  • b) Right lung is slightly smaller
  • c) Left lung is slightly smaller
  • d) Left lung is slightly wider
Q.10
Which one has the lowest value?
  • a) Vital capacity
  • b) Tidal volume
  • c) Expiratory reserve volume
  • d) Inspiratory reserve volume
Q.11
One RBC can transport about how many molecles of oxygen?
  • a) One million
  • b) Ten million
  • c) One billion
  • d) Ten billion
Q.12
In which case specific gases, chemicals or suspended particulate matter in air are not responsible for this disease
  • a) Silicosis
  • b) Asbestosis
  • c) Pneumonia
  • d) Fibrosis
Q.13
The disease in which masses of undifferentiated cells formed in tracheal walls
  • a) Lung cancer
  • b) Acute bronchitis
  • c) Emphysema
  • d) Pneumonia
Q.14
The full from of Hb is
  • a) Hydrogen bromide
  • b) Haemoglobin
  • c) Hydrogen bond
  • d) Henson bond
Q.15
Make the correct pairs.
Columan-I Column-II
(a) Expiratory capacity i. VC + RV.
(b) Inspiratory ii. TV + ERV
(c) Vital capacity iii. TV + IRV.
(d) Total lung capacity iv. TV + IRV + ERV.
  • a) P - i , Q - ii , R - iii , S - iv
  • b) P - ii , Q - iii , R - iv , S - i
  • c) P - ii , Q - iv , R - i , S - iv
  • d) P - iii , Q - iv , R - ii , S - i
Q.16
In which three forms of CO2 is transported by blood
  • a) As a solution, carbamino compounds, bicarbonates
  • b) As a solution, carbamino proteins,KHCO3
  • c) As a solution, carbamino haemoglobin, NaHCO3
  • d) As A solution, carbamino compound H2CO3
Q.17
The diameter of human trachea is about
  • a) 1 cm
  • b) 2.5 cm
  • c) 2 inches
  • d) 0.1 cm
Q.18
Respiration, occurs in the presence of oxygen in called
  • a) Aerobic respiration
  • b) Anaerobic respiration
  • c) Glycolysis
  • d) Fermentation
Q.19
Is Double membrane pleard sac is situated...... (J.K.C.M.E.E.1992)
  • a) Lines the nasal passage
  • b) Envelops the lungs
  • c) Envelops the kidneys
  • d) Envelops the brain
Q.20
Which of these protects the larynx
  • a) Trachea
  • b) Pharnx
  • c) Epiglottis
  • d) Naso-pharynx.
Q.21
Bicarbonate formed inside erythrocytes moves out to plasma while chloride of plasma pass into erythrocytes.The phenomenon is called (Kerala 2001,2003)
  • a) Bicarbonate shift
  • b) Carbonation
  • c) Hamburger phenomenon
  • d) None of the above
Q.22
Vital capacity of lung is equal to (Karnataka 2002)
  • a) IRV+ERV+TV
  • b) IRV+ERV+TV-RV
  • c) IRV+ERV+TV+RV
  • d) IRV+ERV
Q.23
Column I represents diseases and column II represents their symptoms. Which of the following pairs are correct match for them (Guj.CE.T.2006)
ColumnI ColumnII
(P) Asthma (i) Recurring of bronchitis
(Q) Emphysema (ii) Accumulation of W.B.CS in alveolus
(R) Pneumonia (iii) Allergy
  • a) P = iii, Q = ii, R = i
  • b) P = iii, Q = i, R = ii
  • c) P = ii, Q = iii, R = i
  • d) P = ii, Q = i, R = iii
Q.24
This disease is due lo allergens
  • a) Emphysema
  • b) Bronchitis
  • c) Pneumonia
  • d) Asthma
Q.25
The function of pneumotoxic center is
  • a) Increases rate of ethalation
  • b) To maintain rhythmicity of respiration
  • c) To regulate inhalation
  • d) Does not play significant role.
Q.26
CO2 combines in human RBC with the which ion of haemoglobin
  • a) -NH2
  • b) -OH-
  • c) -H+
  • d) – COOH
Q.27
Respiration rate is the lowest during.
  • a) Running
  • b) Sleeping
  • c) Eating
  • d) Playing
Q.28
The trachea is supported by, cartilaginous rings,which are.........shaped
  • a) C
  • b) L
  • c) O
  • d) S
Q.29
During exhalation, the diaphragm moves
  • a) Apart
  • b) Downwards
  • c) Upwards
  • d) Inwards
Q.30
The largest amount of CO2 is transported in blood as
  • a) Carbonic acid
  • b) Carbamino compounds
  • c) Carbonate ions.
  • d) Bicarbonates
Q.31
Carbamino proteins are formed in
  • a) Blood cells
  • b) Blood plasma
  • c) RBC
  • d) Blood platelets
Q.32
On respiratory surface,KHCO3 formed in RBC reacts with
  • a) H.HbO2
  • b) Cl-
  • c) H.Hb
  • d) Hb
Q.33
Respiratory movements are controlled by ...
  • a) Crura cerebri
  • b) Medulla oblongata
  • c) Cerebelluam
  • d) Cerebrum
Q.34
Air is breathed through ... ...
  • a) Trachea → lung → larynx → pharynx → alveoli
  • b) Nose → larynx → pharynx → alveoli → bronchioles
  • c) Nostrils → pharynx → larynx → trachea → bronchi → bronchioles → alveoli
  • d) Nose → mouth → lungs.
Q.35
Match the following
Columan-I Column-II
(a) Bronchus i. Give passage to air toward alveoli
(b) Alveoli ii. Give passage to air toward lung
(c) Bronchioles iii. Give passage to air toward bronchus
(d) Trachea iv. Perform exchange of air
  • a) P - ii , Q - iii , R - iv , S - i
  • b) P - i , Q - iv , R - ii , S - iii
  • c) P - ii , Q - iv , R - i , S - iii
  • d) P - i , Q - iii , R - ii , S - iv
Q.36
The surface, from which the exchange of, gas takes place, is called
  • a) Respiration surface
  • b) Respiratory substrates
  • c) Plasma surface
  • d) Gaseous surface
Q.37
The intake of air is called ?
  • a) Inhalation
  • b) Respiration.
  • c) Exhalation
  • d) Venitlation
Q.38
Bronchitis is a
  • a) Fungal infection.
  • b) Viral infection
  • c) Bacterial infection
  • d) Protozoan infection
Q.39
The muscles take part in rapid breathing
  • a) Thoracic and abdominal muscles
  • b) Muscles of neck region and thoracic region.
  • c) Muscles of rib cage
  • d) Muscles of neck region and abdominal region
Q.40
This disease is due to first virus infection followed by bacterial attack
  • a) Allergy
  • b) Emphysema
  • c) Bronchitis
  • d) Asthma
Q.41
AIDS patients are susceptible to this respiratoty disease
  • a) Fibrosis
  • b) Pneumonia
  • c) Emphysema
  • d) Asthma
Q.42
Maximum amount of O2 is transported in humans by
  • a) Blood platelets
  • b) WBC
  • c) RBC
  • d) Blood plasma
Q.43
Volume of air inspired or expired with each normal breath is known as(CMPT.1992,AMU.2000)
  • a) Tidal volume
  • b) Residual volume
  • c) Inspiratory capacity
  • d) Total Lung capacity
Q.44
Carbon dioxide is transported from tissues to respiratory surface by only... ...
  • a) Erythrocytes and leucocytes.
  • b) Erythrocytes
  • c) Plasma
  • d) Plasma and erythrocytcs
Q.45
Body tissue obtain oxygen from haemoglobin due to its dissociation in tissues caused by (M.P.PMT.1995)
  • a) Low carbon dioxide concentration
  • b) High carbon dioxide concentration.
  • c) Low oxygen concentration
  • d) Low oxygen concentration and high carbon dioxide concentration
Q.46
During transport of CO2 blood does not become acidic due to ... ...
  • a) Blood buffers
  • b) Neutralisation of H2CO3 by Na2CO3
  • c) Absorption by leucocytes
  • d) Non accumulation
Q.47
Amount of oxygen present in one gram of haemoglobin is .. (A.I.I.M.S.1997,Har.PMT,2000)
  • a) 20 ml
  • b) 1-3.4 ml
  • c) 1.3-4 ml
  • d) None of the above
Q.48
The cells which do not respire (A.FMC.2001)
  • a) Sieve cells
  • b) Epidermal cells
  • c) Erythocytes
  • d) Cortical cells
Q.49
Which is false ? (Manipal 1995)
  • a) Blood from right side of heart is carried to lungs by pulmonary artery
  • b) Pleura is double covering of kindey
  • c) Pancreas is both exocrine & endocrine gland
  • d) Scurvy is due to vitamin C deficiency.
Q.50
Lungs have a number of alveoli for ... ...
  • a) More space for increasing volume of inspired air
  • b) Having spongy texture and proper shape
  • c) More nerve supply.
  • d) More surface area for diffusion of gases
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