1)Respiration is helpful in
(a) Removing waste from the body
(b) Producing energy within the body
(c) Production of proteins
(d) Production of carbohydrates
Answer
Ans.(b)
2)The surface, from which the exchange of gas takes place is called
(a) Plasma surface
(b) Respiratory substrates
(c) Respiration surface
(d) Gaseous surface
Answer
Ans.(c)
3)Which of the following shows pulmonary respiration
(a) Sponge
(b) Fishes
(c) Coelenterate
(d)human
Answer
Ans.(d)
4) What is the upper region of pharynx called?
(a) Oropharynx
(b) Nasopharynx
(c) Laryngopharynx
(d) None of these
Answer
Ans.(b)
5)the trachea is supported by,cartilaginous rings,which are…………shaped
(a)C
(b)L
(c)O
(d)S
Answer
Ans.(c)
6) A lung contains many small balloon like air sacs called
(a)gas spaces
(b)alveoli
(c)bronchi
(d)bronchioles
Answer
Ans.(b)
7) Intercoastal muscles regulate the movement of
(a)ribs
(b)trachea
(c)diaphragm
(d)pharynx
Answer
Ans.(a)
8) Respiratory control centres are located in
(a)lungs
(b)medulla oblongata
(c)spinal cord
(d)ribs
Answer
Ans.(b)
9) The deoxygenated blood from heart comes to the lungs by
(a)pulmonary artery
(b)pulmonary vein
(c)bronchial artery
(d)renal vein
Answer
Ans.(a)
10) The metal ion present in haemoglobin is
(a)iron
(b)magnesium
(c)copper
(d)zinc
Answer
Ans.(a)
11)how much fraction of oxygen is transported to tissues through RBCs?
(a)100%
(b)56%
(c)45%
(d)97%
Answer
Ans.(d)
12)H2CO3 is converted into CO2 and H2O with the help of an enzyme known as
(a)carboxylase
(b)carbonic dehydrogenase
(c)carbonicenhydrase
(d)carbonic anhydrase
Answer
Ans.(d)
13)the largest amount of CO2 is transported in blood as
(a)carbamino compounds
(b)bicarbonates
(c)carbonic acid
(d)carbonate ions
Answer
Ans.(b)
14)chloride back-shiftis associated with the transport of
(a)carbamino
(b)CO2
(c)oxygen
(d)water
Answer
Ans.(c)
15)bronchitis is a
(a)bacterial infection
(b)viral infection
(c)protozoan infection
(d)fungal infection
Answer
Ans.(a)
16)flattening of alveola ducts(tracheal vessels)results in
(a)asthma
(b)emphysema
(c)lung cancer
(d)bronchitis
Answer
Ans.(b)
17)which of these protects the larynx
(a)pharnx
(b)trachea
(c)epiglottis
(d)naso-pharynx
Answer
Ans.(c)
18)which is not a viral infection
(a)vocational lung disease
(b)bronchitis
(c)asthma
(d)emphysema
Answer
Ans.(a)
19)in which case specific gases ,chemicals or suspended particulate matter in air are not responsible for this disease
(a)silicosis
(b)asbestosis
(c)fibrosis
(d)pneumonia
Answer
Ans.(d)
20)in human beings
(a)left lung is slightly smaller
(b)left lung is slightly wider
(c)right lung is slightly smaller
(d)both lungs are of similar size
Answer
Ans.(a)
21)the left lung is slightly smaller so as
(a)it is exception
(b)no specific reason
(c)both A and B
(d)to accommodate heart
Answer
Ans.(d)
22)this disease is due to allergens
(a)emphysema
(b)bronchitis
(c)pneumonia
(d)asthma
Answer
Ans.(d)
23)the centre which excites both the activities during rapid breathing is
(a)ventral respiratory center
(b)lateral respiratory center
(c)pneumotoxic center
(d)dorsal respiratory center
Answer
Ans.(a)
24)the function of pneumotoxic center is
(a)to regulate inhalation
(b)to maintain rhythmicity of respiration
(c)increases rate of exhalation
(d)does not play significant role
Answer
Ans.(a)
25)the enzyme carbonic anhydrase is of which type?
(a)lyases
(b)reversible
(c)unidirectional
(d)isomerase
Answer
Ans.(b)
26)what is the role of buffer system in blood?
(a)to maintain pH of blood plasma
(b)to maintain pH of blood
(c)to maintain pH of RBC
(d)to maintain pH of blood platelets
Answer
Ans.(b)
27)maximum amount of O2 is transported in humans by
(a)RBC
(b)WBC
(C)blood platelets
(d)blood plasma
Answer
Ans.(a)
28)oxygen carrying capacity of blood is
(a)20%
(b)30%
(c)40%
(d)50%
Answer
Ans.(a)
29)respiratory movements are controlled by
(a)cerebellum
(b)cerebrum
(c)medulla oblongata
(d)cruracerebri
Answer
Ans.(c)
30)vital capacity of lung is equal to
(a)IRV+ERV+TV
(b)IRV+ERV+TV-RV
(c)IRV+ERV+TV+RV
(d)IRV+ERV
Answer
Ans.(a)
31)vocal cords occur in
(a)pharynx
(b)larynx
(c)glottis
(d)bronchial tube
Answer
Ans.(b)
32)the cells which do not respire are
(a)epidermal cells
(b)sieve cells
(c)cortical cells
(d)erythrocytes
Answer
Ans.(d)
33)Which lungs are situated in the human body
(a)abdominal cavity
(b)thoracic cavity
(c)coelomic cavity
(d)pleural cavity
Answer
Ans.(b)
34)which is the last step involved in respiration
(a)diffusion of gases
(b)breathing
(c)utilization of O2,by body cellsand resultant release of CO2
(d)transport of gases
Answer
Ans.(c)
35)the breathing rate of normal healthy man is
(a)8-18 times/min
(b)6-12 times/min
(c)16-24 times/min
(d)12-16 times/min
Answer
Ans.(d)
36)what is the value of tidal volume in a normal healthy man?
(a)approximately 6000-8000 ml/min
(b)1000-1100 ml/min
(c)2500-3000 ml/min
(d)approximately 8000-12000 ml/min
Answer
Ans.(a)
37)what is the value of pCO2 in atmospheric air, alveoli and tissues respectively?
(a)0.3 mm Hg,40 mm Hg, 95 mm Hg
(b)95 mm Hg,40 mm Hg,159 mm Hg
(c)45 mm Hg,0.3 mm Hg,40 mm Hg
(d)0.3 mm Hg,40 mm Hg,45 mm Hg
Answer
Ans.(d)
38)which part of Hb,O2 molecules bind?
(a)haem
(b)globin
(c) both A and B
(d) amino group of globin
Answer
Ans.(a)
39)how much CO2 is delivered to the alveoli by every 100 ml of deoxygenated blood?
(a)6 ml
(b)4 ml
(c)5 ml
(d)3 ml
Answer
Ans.(b)
40)a pair of external nostrils present in human opens out
(a)below the upper lips
(b)above the upper lips
(c)between upper and lower lips
(d)above the rhythm
Answer
Ans.(b)
41)which instrument helps in clinical assessment of pulmonary functions?
(a)sphygmomanometer
(b)stethoscope
(c)spirometer
(d)electrocardiograph
Answer
Ans.(c)
42)diaphragm is dome shaped muscular structure which separates
(a)coelomic cavity from pelvic cavity
(b)pleural cavity from thoracic cavity
(c)thoracic cavity from abdominal cavity
(d)pelvic cavity from abdominal cavity
Answer
Ans.(c)
43)what happens when pressure within the pulmonary cavity is higher then the atmosphere pressure?
(a)inhalation of air
(b)expulsion of air
(c)no inhalation and expulsion of air occurs
(d)lungs inhale and rupture
Answer
Ans.(b)
44)in mature mammalian erythrocytes the respiration is
(a)aerobic
(b)anaerobic
(c)sometimes aerobic and sometimes anaerobic
(d)absent
Answer
Ans.(b)
45)skin of man cannot act as respiratory organ because
(a)it is dry
(b)it is not thin
(c)it is not permeable to O2 and CO2
(d)all of these
Answer
Ans.(d)
46)which of the following is not a character of respiratory surface?
(a)thin,permeable to gases
(b)extensive
(c) least vascular
(d)moist
Answer
Ans.(c)
47)ring like cartilage of larynx is known as
(a)thyroid cartilage
(b)arytenoid cartilage
(c)cricoid cartilage
(d)cartilage of santonni
Answer
Ans.(c)
48)lungs are enclosed in
(a)peritoneum
(b)perichondrium
(c)pericardium
(d)pleural membranes
Answer
Ans.(d)
49)which of the following reflex is involved to prevent excessive inflation of lungs?
(a)stretch reflex
(b)hering-breuer’s reflex
(c)withdrawal reflex
(d)conditioned reflex
Answer
Ans.(b)
50)the ventilation movements of lungs in mammals are governed by
(a)muscular walls of lung
(b)diaphragm
(c) costal muscles
(d)both B and C
Answer
Ans.(d)
