EASY
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Though digestive and respiratory passage joins at someplace, there is no entry of food into the respiratory passage. This is due to the presence of:

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Important Questions on Digestive System

EASY
Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
The first enzyme that the food encounters in human digestive system is
MEDIUM
Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
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__.
EASY
Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
The crypts of Lieberkuhn are found in which one of the following parts of the human digestive tract?
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Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
Which of the following terms describe human dentition?
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Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
Which cells of 'Crypts of Lieberkuhn' secrete antibacterial lysozyme?
EASY
Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
Which ONE of the following is NOT a function of the small intestine?
EASY
Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands

Study the following diagram of human tongue and identify the part I, II, and III

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Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
The proteolytic enzyme rennin is found in:
EASY
Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
Identify the cells whose secretion protects the lining of gastro-intestinal tract from various enzymes.
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Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
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.
MEDIUM
Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
Discuss the basic structure of the alimentary canal wall and explain differences found in the various regions of the alimentary canal.
EASY
Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
Which of the following guards the opening of the hepatopancreatic duct into the duodenum?
MEDIUM
Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
Which of the following statements is not correct?
EASY
Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
Which one of the following glands does not secrete saliva?
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Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
In the digestive system, the pH of the stomach and the intestine, respectively are:
EASY
Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands

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

EASY
Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
Intrinsic factor that helps in the absorption of vitamin B12 is secreted by:
EASY
Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
Identify the correct statement with reference to human digestive system.
MEDIUM
Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
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?
EASY
Biology>Human Physiology>Digestive System>Alimentary Canal and Digestive Glands
The primary dentition in human differs from permanent dentition in not having one of the following types of teeth: