21.
Larynx open into pharynx by
A
Gullet
B
Glottis
C
Epiglottis
D
None of the above
Answer :
Glottis
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22.
How oxygen enters in blood from alveoli of lungs
A
Pressure of CO2
B
Simple diffusion
C
By Hb
D
None of the above
Answer :
Simple diffusion
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23.
Residual air mostly occurs in
A
Alveoli
B
Bronchus
C
Nostrils
D
Trachea
Answer :
Alveoli
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24.
Dissociation curve shifts to the when
A
CO2 concentration decreases
B
CO2 concentration increases
C
O2 concentration decreases
D
Noneof the above
Answer :
CO2 concentration increases
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25.
Expiratory muscles contract at the time of
A
Deep inspiration
B
Normal inspiration and expiration
C
Forceful expiration
D
X-rays
Answer :
Forceful expiration
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26.
In the process of transport of CO2 which phenomenon occurs between RBSs and plasma
A
Osmosis
B
Adsorption
C
Chloride shift
D
Absorption
Answer :
Chloride shift
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27.
'Body tissues obtain O2 from haemoglobin because of its dissociation in tissues caused by
A
Low oxygen concentration and high CO2 concentration
B
High O2 concentration
C
Low CO2 concentration
D
Pterygoid
Answer :
Low oxygen concentration and high CO2 concentration
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28.
Wall of alveoli is composed of
A
Simple squamous epithelium
B
Simple cuboidal epithelium
C
Pseudostratified epithelium
D
Simple columnar epithelium
Answer :
Simple squamous epithelium
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29.
Pneumotaxic centre is present in
A
Pons
B
Medulla
C
Cerebrum
D
Skull of frog
Answer :
Pons
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30.
Vocal cords are attached with
A
Cricoid
B
Arytenoid
C
Thyroid and arytenoid(
D
Turgor pressure
Answer :
Thyroid and arytenoid(
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