Topic wise MCQ test for MHT-CET and NEET
8. Respiration and Circulation
(1)
The muscular structure that separates the thoracic and abdominal cavity is
.......... .
(a) pleura
(b) diaphragm
(c) trachea
(d) epithelium
Answer: - (b)
diaphragm
(2)
What is the minimum number of plasma membrane that oxygen has to diffuse across
to pass from air in the alveolus to hemoglobin inside a R.B.C. ?
(a)
two
(b)
three
(c)
four
(d)
five
Answer: -(a)
two
(3)
.......... is a sound producing organ.
(a)
Larynx
(b)
Pharynx
(c)
Tonsils
(d)
Trachea
Answers:
-(a)
Larynx
(4)
The maximum volume of gas that is inhaled during breathing in addition to T.V.
is .......... .
(a)
residual volume
(b)
IRV
(c)
GRV.
(d)
vital capacity
Answers: -(b)
IRV
(5)
.......... muscles contract when the external intercostals muscles contract.
(a)
Internal abdominal
(b)
Jaw
(c)
Muscles in bronchial walls
(d)
Diaphragm
Answers: - (d)
Diaphragm
(6)
Movement of cytoplasm in unicellular organisms is called .......... .
(a)
diffusion
(b)
cyclosis
(c)
circulation
(d) thrombosis
Answers: -(b)
cyclosis
(7)
Which of the following animals do not have closed circulation?
(a)
Earthworm
(b)
Rabbit
(c)
Butterfly
(d)
Shark
Answers: -(c)
Butterfly
(8)
Diapedesis is performed by .......... .
(a)
erythrocytes
(b)
thrombocytes
(c)
adipocytes
(d)
leucocytes
Answers: - d)
leucocytes
9)
Pacemaker of heart is .......... .
(a)
SA node
(b)
AV node
(c)
His bundle
(d)
Purkinje fibers
Answers: -(a)
SA node
(10)
Which of the following is without nucleus ?
(a)
Red blood corpuscle
(b)
Neutrophils
(c)
Basophil
(D)
Lymphocyte
Answers: - (a)
Red blood corpuscle
(11)
Cockroach shows which kind of circulatory system ?
(a)
Open
(b)
Closed
(c)
Lymphatic
(d)
Double
Answers: - (a)
Open
(12)
Diapedesis can be seen in .......... .
(a)
RBC
(b)
WBC
(c)
Platelet
(d)
neuron
Answers: - (b)
WBC
(13)
Opening of inferior vena cava is guarded by………
a)
bicuspid valve
(b)
tricuspid valve
(c)
Eustachian valve
(d)
Thebesian valve
Answers: -(c)
Eustachian valve
(14)
.......... wave in ECG represent atrial depolarization.
(a)
P
(b)
QRS complex
(c)
Q
(d)
T
Answers: - (a)
P
(15)
The fluid seen in the intercellular spaces in Human is .......... .
(a)
blood
(b)
lymph
(c)
interstitial fluid
(d)
water
Answers: - (b)
lymph
(16)
The nasal cavity is divided into right and left nasal chambers by a ..........
.
(a)
sphenoid
(b)
palatine
(c)
mesethmoid
(d)
zygomatic
Answers: - (c)
mesethmoid
(17)
The right lung is divided into .......... .
(a)
3 lobes
(b)
2 lobes
(c)
4 lobes
(d)
6 lobes
Answers: - (a)
3 lobes
(18)
Carbon dioxide is carried in the blood mainly as .......... .
(a)
sodium carbonate
(b)
sodium bicarbonate
(c)
carbamino haemoglobin
(d)
carbonic acid
Answers: - (b)
sodium bicarbonate
(19)
Transport of oxygen is carried out by .......... .
(a)
plasma
(b)
lungs
(c)
RBC
(d)
nostrils
Answers: -(c) RBCs
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(20)
Respiration taking place at the alveoli of lungs is called .......... .
(b) external respiration
(c)
cellular respiration
(d)
tissue respiration
Answers: - (b)
external respiration
(21)
The volume of air inspired or expired during normal breathing is .......... .
(a)
ERV
(b)
IRV
(c)
TV
(d)
VC
Answers: - (c)
TV
(22)
What is the partial pressure of oxygen and carbon dioxide respectively in the
atmospheric air?
(a) PPO 2 159 mm Hg, PPCO2 0.3 mm Hg
(b) PPO 2 104 mm Hg, PPCO2 40 mm Hg
(c) PPO 2 40 mm Hg, PPCO2 45 mm Hg
(d) PPO 2 95 mm Hg, PPCO2 40 mm Hg
Answers: -(b)
PPO 2 104 mm Hg, PPCO2 40 mm Hg
(23)
The vital capacity of human lung is equal to .......... .
(a)
3500 ml
(b)
4600 ml
(c)
500 ml
(d)
1200 ml
Answers: - (b)
4600 ml
(24)
The exchange of gases between alveolar air and alveolar capillaries occurs
by……….
(a)
Osmosis
(b)
active transport
(c)
absorption
(d)
diffusion
Answers: -(d)
diffusion
(25)
Oxygen dissociation curve will shift to right on the decrease of .......... .
(a)
acidity
(b)
carbon dioxide concentration
(c)
temperature
(d)
pH
Answers: - (d)
pH
(26)
Respiratory organs in scorpion are .......... .
(a)
gills
(b)
book lungs
(c)
skin
(d)
book gills
Answers: - (b)
book lungs
(27)
Breakdown of alveoli of lungs resulting in reducing surface area for gas
exchange is known as
(a)
emphysema
(b)
sneezing
(c)
pneumonia
(d)
tuberculosis
Answers: - (a)
emphysema
(28)
During inspiration, the diaphragm .......... .
(a)
relaxes
(b)
contracts
(c)
expands
(d)
shows no change
Answers: - (b)
contracts
(29)
Over inflation of the lungs is prevented due to .......... .
(a)
Bohr’s effect
(b)
Conditioned reflex
(c)
Hering-Breuer reflex
(d)
Haldane effect
Answers:
-(c)
Hering-Breuer reflex
(30)
Which of the following prevents collapsing of trachea ?
(a)
Muscles
(b) Diaphragm
(c)
Ribs
(d)
Cartilaginous rings
Answers: -(d)
Cartilaginous rings
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