Tag: digestion

Quizzes (15) Questions (200)

Questions Related to digestion

Multiple choice bio-chemistry digestion digestive glands liver pancreas

Which of the following statements regarding small intestine are incorrect?
(i) Throughout the small intestine, there are crypts of Lieberkuhn at the base of the villi.
(ii) In duodenum, there are, in addition, small rounds peptic glands.
(iii) The small intestine is strongly -self-protective; by means of a copious production of mucus and a mechanism for the rapid replacement of cells I damaged by contact with fooiLapd. digestive juices.
(iv) Each villus is richly supplied with blood capillaries only.

  1. (i) and (iv)

  2. (ii) and (iv)

  3. (iii) and (iv)

  4. (i) and (ii)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The correct answer is (b). 

Multiple choice bio-chemistry digestion digestive glands liver pancreas

Sacculus rotundus is a dilated part as posterior end of

  1. Ileum

  2. Oesophagus

  3. Ilium

  4. Colon
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • An anatomic structure exclusive to rabbits that are located at the terminal part of the ileum is sacculus rotundus. 
  • It is formed at the distal end of ileum and is expanded to form a small dilated spherical sac in a rabbit.
  •  It is rich in lymphoid tissue. Hence, Sacculus rotundus is a dilated part as posterior end of the ileum.
So, the correct answer is 'ileum'.

Multiple choice bio-chemistry digestion digestive glands liver pancreas

Crypts in between the bases of villi in the intestine are crypts of Lieberkuhn. Which of the following cells in these crypts secrete digestive enzymes?

  1. Pariental cells

  2. Paneth cells

  3. Zymogen cells

  4. Argentaffin cells
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation


Crypts are anatomical structures that are narrow but deep invaginations into a larger structure. One common type of anatomical crypt is the Crypts of Lieberkühn. Crypts of Lieberkuhn between the bases of villi in the intestine have the Paneth cells which secrete digestive enzymes.

So, the correct option is 'paneth cells'.

Multiple choice bio-chemistry digestion digestive glands liver pancreas

A carbohydrate splitting enzyme is secreted by 

  1. Liver

  2. Zymogen cells of gastric glands

  3. Spleen

  4. Crypts of Lieberkuhn
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

While the chyme is present within the small intestine, glands within this structure begin to secrete different types of digestive enzymes, called carbohydrases (amylase, proteases, and lipases or fat splitting enzymes). The glands responsible for these enzymatic secretions are found in the mucosal layer of the small intestine, called the crypts of Lieberkuhn.

Multiple choice bio-chemistry digestion digestive glands liver pancreas

Crypts of lieberkuhn are present in

  1. Intestine

  2. Stomach

  3. Oesophagus

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An intestinal gland (crypts of Lieberkuhn) is a gland found in the epithelial lining of the small intestine and colon. The glands are named after German anatomist J. N. Lieberkuhn.

Multiple choice bio-chemistry digestion digestive glands liver pancreas

Crypts of Lieber kuhn are present in ___________.

  1. Intestine

  2. Stomach

  3. Oesophagus

  4. All of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Crypts of Lieberkuhn are tubular glands found in the intestinal mucosa, specifically between the villi in the small intestine.

Multiple choice bio-chemistry digestion digestion in small intestine digestive glands and their secretions alimentary canal

Which of the following are secreted by duodenum or small intestine?

  1. Enterokinin

  2. Secretin

  3. Villikinin

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

(A) Enterokinin is the hormone secreted by Brunner's gland activates the inactive enzyme of the pancreas and convert procarboxypeptidase into carboxypeptidase.

(B) Secretin secreted bu duodenum into blood stimulates the secretion of the pancreas and liver.
(C) VIlikinin is released by duodenal mucosa and increases the motility of villi.
So the correct option is 'All of the above.

Multiple choice bio-chemistry digestion digestion in small intestine digestive glands and their secretions alimentary canal

The pH of human small intestine is around $7.5$ and the pH of large intestine can be $5.5$. As substances travel from the small intestine to larger intestine, what would happen to the $H^+$ ions concentration?

  1. Increases $20$ fold
  2. Increases $2$ fold
  3. Increases $10$ fold
  4. Increases $100$ fold
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

pH scale is not a linear scale like a centimetre or inch scale (in which two adjacent values have the same difference). It is a logarithmic scale in which two adjacent values increase or decrease by a factor of 10. As pH 7.5 and 5.5 differ by 2, the difference in H$^{+}$ ion concentration between them would be 10$^{2}$ = 100.

So, the correct option is 'Increases 100 fold'.