Which one of the following four glands is correctly matched with

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 Multiple Choice QuestionsMultiple Choice Questions

81.

Assertion : Aldosterone is a steroid hormone and is important in the control of sodium and potassium ion concentration in mammals.

Reason : It upgrades sodium ion concentration in the ECF by promoting reabsorption of sodium ions from renal tubules and excretion of potassium ions in urine.

  • 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


82.

Which one of the following four secretions is correctly matched with its source, target and nature of action?

  • Secretion Source Target Action
    Gastrin Stomach lining Oxyntic cells Production of HCl
  • Inhibin Sertoli cells Hypothalamus Inhibition of secretion of gonadotropin releasing hormone
  • Enterokinase Duodenum Gall bladder Release of bile juice
  • Atrial Natiuretic Factor (ANF) Sinu atrial node (SAN) M- cells of Atria Juxta- glomerular apparatus (JGA) Inhibition of release of renin

83.

Tadpoles of frog can be made to grow as giant sized tadpoles, if they are

  • administered antithyroid substance like thiourea

  • administered large amounts of thyroxine

  • reared on a diet rich in egg yolk

  • reared on a diet rich in both egg yolk and glucose.


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84.

Which one of the following four glands is correctly matched with the accompanying description ?

  • Thyroid - hyperactivity in young children causes cretinism

  • Thymus - starts undergoing atrophy after puberty

  • Parathyroid - secretes parathormone which promotes movement of calcium ions from blood into bones during calcification

  • Pancreas - Delta cells of the Islets of Langerhans secrete a hormone which stimulates glycolysis in liver


B.

Thymus - starts undergoing atrophy after puberty

The thymus gland is located behind the sternum and between lungs. It is only active until puberty. After puberty, the thymus starts to shrink slowly and become replaced by fat.

The thyroid gland is a vital hormone gland. It plays an important role in the metabolism growth and development of the human body. It helps to regulate many body functions by constantly releasing a steady amount of thyroid hormones into the bloodstream. Cretinism is a type of mental retardation and bodily malformation caused by severe, uncorrected thyroid deficiency.

The major function of parathyroid gland is to maintain the body's calcium and phosphate levels within a very narrow range, so that the nervous and muscular systems can function properly. It secretes parathyroid hormone. It also enhances the excretion of phosphate by the kidneys and its uptake by the cells.

Pancreas is an organ present in abdomen. It plays an essential role in converting the food we eat into fuel for the body's cells. Delta cells is a type of cell found in Islets of Langerhans in pancreas. They form somatostatin, a hormone that inhibits the release of numerous hormones in the body.


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85.

Assertion: Our body secretes adrenaline in intense cold.

Reason: Adrenaline raises metabolic rate.

  • 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.


86.

The source of somatostatin is same as that of

  • thyroxine and calcitonin

  • insulin and glucagon

  • somatotropin and prolactin

  • vasopresin and oxytocin


87.

Assertion: Diabetes insipidus is marked by excessive urination and too much thirst of water.

Reason: Anti-diuretic hormone (ADH) is secreted by the posterior lobe of pituitary gland,

  • 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.


88.

Which is not a gonadal hormone

  • Progesterone

  • Testosterone

  • Adrenalin

  • Estrogen


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89.

Adrenal gland is derived from

  • ectoderm

  • mesoderm

  • endoderm

  • both (a) and (b)


90.

Which endocrine gland becomes inactive in old age

  • Adrenal

  • Thymus

  • Pineal

  • Pituitary


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