Assertion: Oxytocin is also known as Antidiuretic hormone (ADH).R

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 Multiple Choice QuestionsMultiple Choice Questions

191.

The intestinal juice, succus entericus is secreted by

  • Brunner's gland

  • Kupffer cells

  • crypts of Leiberkuhn

  • goblet cells


192.

Below freezing point, the pepsin

  • becomes over activated

  • gets destroyed

  • remains unaffected

  • gets inactivated


193.

Wharton's duct is the duct of

  • submandibular salivary gland

  • parotid gland

  • sublingual gland

  • all of these


194.

Cholesterol is a precursor for each of the following except

  • bile salts

  • vitamin D

  • insulin

  • steroids


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195.

Which of the following gastric secretions is correctly matched with its source?

  • Pepsin - Chief cells

  • Chymotrypsin - Parietal cells

  • HCl - Goblet cells

  • Mucus - Oxyntic cells


196.

Assertion: HCl converts pepsinogen into active enzyme pepsin.

Reason: Pepsin converts protein into proteoses and peptones.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


197.

Assertion: Emulsification is necessary for the digestion of fats.

Reason: After fats are emulsified, the action of enzyme amylase gets significantly increased.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


198.

Assertion: In jaundice, the skin and mucous membranes assume a yellowish hue

Reason: Yellow pigment bilirubin imparts pale yellow colour to blood plasma

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


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199.

Assertion: No taste sensation is evoked when drop of distilled water is put on human tongue.

Reason: Man does not possess taste buds for tasting water.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


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200.

Assertion: Oxytocin is also known as Antidiuretic hormone (ADH).

Reason: Oxytocin can cause an increase in the renal reabsorption of water.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false


D.

If both assertion and reason are false

It is not oxytocin, but the hormone vasopressin (also known as antidiuretic hormone, ADH) because it reduces the volume of urine by increasing the reabsorption of water from the urine in the distal convoluted tubules, collecting tubules and collecting ducts in the kidney. It does so by rendering the walls of those tubules permeable to water. Failure of secretion of vasopressin leads to a reduced renal reabsorption of water and a consequent elimination of a large volume of very dilute (hypotonic) urine.

Oxytocin is another hormone released by the posterior lobe of pituitary gland. Oxytocin contracts the mammary glands, smooth muscles of uterus. Uterine contractions, stimulated by oxytocin at the end of pregnancy, help in the child-birth or parturition, hence also called birth hormone. The oxytocin - induced contractions of the mammary gland muscles help in the flow of stored milk from the mammary glands, hence also called milk ejection hormone.


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