Tag: liver

Questions Related to liver

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?

bio-chemistry digestion digestive glands liver pancreas

  1. Pariental cells

  2. Paneth cells

  3. Zymogen cells

  4. Argentaffin cells

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Correct Option: B
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'.

A carbohydrate splitting enzyme is secreted by 

bio-chemistry digestion digestive glands liver pancreas

  1. Liver

  2. Zymogen cells of gastric glands

  3. Spleen

  4. Crypts of Lieberkuhn

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Correct Option: D
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.

Crypts of lieberkuhn are present in

bio-chemistry digestion digestive glands liver pancreas

  1. Intestine

  2. Stomach

  3. Oesophagus

  4. All of the above

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Correct Option: A
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.

Crypts of Lieber kuhn are present in ___________.

bio-chemistry digestion digestive glands liver pancreas

  1. Intestine

  2. Stomach

  3. Oesophagus

  4. All of these

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Correct Option: A

Which of the following gland is partly exocrine and partly exocrine?

biology digestive system of human digestive glands liver pancreas

  1. Pituitary

  2. Thyroid

  3. Pancreas

  4. Hypothalamus

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Correct Option: C
Explanation:
Pancreas acts both as endocrine (ductless) and exocrine (with duct) gland. It works as exocrine gland as it excretes enzymes to break down the proteins, lipids, carbohydrates, and nucleic acids in food and helps in digestion. It works as endocrine gland as it secretes the hormones insulin and glucagon to control blood sugar levels throughout the day. 
Hence option C is correct.

Heparin is synthesised in

biology digestive system of human digestive glands liver pancreas

  1. Kidney

  2. Salivary glands

  3. Pancreas

  4. Liver

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Correct Option: D
Explanation:

Heparin is an anticoagulant formed in the liver and mast cells. It is found in blood and connective tissues. It belongs to a class of mucopolysaccharides and helps to prevent blood clots in arteries and veins. It is an anticoagulant that prevents the formation of blood clots. It is also used before surgery to reduce the risk of blood clots. It helps the blood to flow smoothly in the body by making a certain natural substance in the body work better. 

Thus, the correct answer is option D. 

In human beings, sphincter of oddi is situated in 

biology digestive system of human digestive glands liver pancreas

  1. Common bile duct

  2. Ampulla of vater

  3. Main pancreatic duct

  4. Common hepatic duct

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Correct Option: B
Explanation:

The sphincter of Oddi, abbreviated as SO, is a muscular valve that controls the flow of digestive juices through the ampulla of Vater into the second part of the duodenum. The sphincter of Oddi is relaxed by the hormone cholecystokinin via vasoactive intestinal peptide. 

So, the correct option is 'Ampulla of Vater'.

Stool of a person contain whitish grey colour due to malfunction of which type of organ : -

biology digestive system of human digestive glands liver pancreas

  1. Pancrease

  2. Spleen

  3. Kidney

  4. Liver

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Correct Option: D
Explanation:
Bilirubin is broken down to urobilinogen and stereobilinogen. The yellowish-brown colour of stool is due to the stereobilinogen. Due to the malfunctioning of the liver, insufficient production of stereobilinogen leads to white stool.

So, the correct answer is 'Liver'.

The pancreas produces?

biology digestive system of human digestive glands liver pancreas

  1. Three digestive enzymes and one hormone

  2. Three types of digestive enzymes and two hormones

  3. Two digestive enzymes and one hormone

  4. Only digestive enzyme and no hormone

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Correct Option: B
Explanation:
The pancreas produces majorly three types of digestive enzymes:
  • Proteases: to digest proteins.
  • Lipase: to break down fats.
  • Amylase: for the digestion of carbohydrates.

 The pancreas maintains the body’s blood glucose (sugar) balance. Primary hormones of the pancreas include insulin and glucagon, and both regulate blood glucose.
  • Insulin: This hormone regulates blood glucose by allowing many of your body’s cells to absorb and use glucose. In turn, this drops blood glucose levels.
  • Glucagon: Glucagon helps insulin maintain normal blood glucose by working in the opposite way of insulin. It stimulates your cells to release glucose, and this raises your blood glucose levels.

So, the correct answer is 'Three types of digestive enzymes and two hormones'.

Kupffer's cells of liver are an example of ________________.

biology digestive system of human digestive glands liver pancreas

  1. Anatomical barrier

  2. Inflammatory barrier

  3. Physiological barrier

  4. none of the above

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Correct Option: B
Explanation:

Kupffer cells are also known as stellate macrophages (star-shaped) located in the liver, lining the walls of the sinusoids. They form part of the mononuclear phagocyte system. This means that they are a part of the first line of defense (inflammatory barrier) of the body and are involved in engulfing any invading pathogen (virus, bacteria, etc.) and destroy them.

So, the correct answer is 'Inflammatory barrier'.