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The alveolar sac of lungs and villi of the intestine has a similar function; it is that

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Important Questions on Gas Exchange

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Biology>Physiology P1>Gas Exchange>Alveoli
In the digestive system, the pH of the stomach and the intestine, respectively are:
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Biology>Physiology P1>Gas Exchange>Alveoli
The lungs are spongy and elastic due to _______.
MEDIUM
Biology>Physiology P1>Gas Exchange>Alveoli
Which of the following statements is not correct?
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Biology>Physiology P1>Gas Exchange>Alveoli
Match the following structures with their respective location in organs:
  Column – I   Column – II
(a) Crypts of Lieberkuhn (i) Pancreas
(b) Glisson’s capsule (ii) Duodenum
(c) Islets of Langerhans (iii) Small intestine
(d) Brunner’s Glands (iv) Liver

Select the correct option.
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Biology>Physiology P1>Gas Exchange>Alveoli
Match the following
  List-I   List-II
(A) Moist body wall (I) Insects
(B) Tracheal system (II) Amphibian larvae
(C) Book lungs (III) Earthworms
(D) Gills (IV) Aves
    (V) Spiders

The correct match is
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Biology>Physiology P1>Gas Exchange>Alveoli
Which cells of 'Crypts of Lieberkuhn' secrete antibacterial lysozyme?
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Biology>Physiology P1>Gas Exchange>Alveoli
The primary dentition in human differs from permanent dentition in not having one of the following types of teeth:
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Biology>Physiology P1>Gas Exchange>Alveoli
In a T. S. of the human small intestine, serosa is the outermost layer and is made up of a thin __A__. Muscularis is formed by the smooth muscles arranged outer __B__ and inner __C__. Sub-mucosa is formed by the __D__. Mucosa is the innermost layer made of __E__.
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Biology>Physiology P1>Gas Exchange>Alveoli
If the number of alveoli in an individual is doubled without changing the total alveolar volume, the gas exchange capacity of the lungs will:
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Biology>Physiology P1>Gas Exchange>Alveoli
Which of the following is not the function of conducting part of respiratory system?
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Biology>Physiology P1>Gas Exchange>Alveoli
Identify the correct statement with reference to human digestive system.
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Biology>Physiology P1>Gas Exchange>Alveoli
The unpaired cartilages supporting the wall of larynx are      
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Biology>Physiology P1>Gas Exchange>Alveoli
The proteolytic enzyme rennin is found in:
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Biology>Physiology P1>Gas Exchange>Alveoli
A baby boy aged two years is admitted to playing school and passes through a dental check-up. The dentist observed that the boy had twenty teeth. Which teeth were absent?
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Biology>Physiology P1>Gas Exchange>Alveoli
Intrinsic factor that helps in the absorption of vitamin B12 is secreted by:
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Biology>Physiology P1>Gas Exchange>Alveoli
The crypts of Lieberkuhn are found in which one of the following parts of the human digestive tract?
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Biology>Physiology P1>Gas Exchange>Alveoli

Following are different layers in the wall of the alimentary canal of man
I) Longitudinal muscles
II) Mucosa
III) Serosa
IV) Circular muscles
V) Submucosa

Arrange them in the correct sequence from the outer to the inner side

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Biology>Physiology P1>Gas Exchange>Alveoli
A person suddenly starts coughing while swallowing food. This coughing would have been due to improper movement of
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Biology>Physiology P1>Gas Exchange>Alveoli
Which is the correct sequence of the air passage in man?
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Biology>Physiology P1>Gas Exchange>Alveoli
In jelly fishes, majority of gaseous exchange takes place through the ______.