Assertion : Hormone calcitonin has antagonistic effect to that of

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71.

What is the effect of GnRH produced by hypothalamus?

  • Stimulates the synthesis and secretion of androgens

  • Stimulates secretion of milk in mammary glands

  • Stimulates foetal ejection reflex

  • Stimulates synthesis of carbohydrates from non- carbohydrates in liver


72.

Assertion : Adrenaline is called an emergency hormone.

Reason : It acts on the cells of skeletal, cardiac, smooth muscles, blood vessels and fat cells

  • 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


73.

Assertion : Insulin is antagonistic to glucagon.

Reason : It is an anabolic hormone.

  • 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.


74.

Assertion : Pantothenic acid deficiency is probably the most common vitamin deficiency.

Reason : Macrocytic anaemia is a characteristic feature of pantothenic acid deficiency.

  • 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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75.

Assertion : Hormone calcitonin has antagonistic effect to that of parathormone.

Reason : Calcitonin decreases blood calcium level while parathormone increases blood calcium level.

  • 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


A.

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

Calcitonin or thyrocalcitonin is secreted by parafollicular cells of thyroid stroma. It retards bone dissolution and stimulates excretion of calcium in urine. Thus, it lowers calcium level in extra cellular fluid (ECF).

Parathornone is secreted by chief cells of parathyroid gland and is also known as Collip's hormone. It maintains blood calcium level by increasing its absorption from food in intestine and its reabsorption from nephrons in the kidney. Maintenance of proper calcium level is in fact, a combined function of parathormone and calcitonin. When calcium level falls below normal, then parathormone maintains it by promoting its absorption, reabsorption and also by demineralization of bones. When blood calcium level exceeds above normal, then calcitonin hormonen increases excretion of calcium in urine.


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76.

A patient of diabetes mellitus excretes glucose in urine even when he is kept in a carbohydrate free diet. It is because

  • fats are catabolised in adipose tissues to form glucose

  • amino acids are catabolised in kidney to form glucose

  • amino acids are discharged in blood stream from liver

  • glycogen from muscles is released in blood stream.


77.

Which of the following match is correct?

  • Hormone Effect
    Oxytocin Milk ejection hormone
  • Glucagon Decreases blood sugar level
  • Adrenaline Decreases heart rate
  • Thyroxine Decreases BMR

78.

Which of the following statements regarding glucagon is false?

  • It is secreted by α-cells of Langerhans

  • It acts antagonistically to insulin

  • It decreases blood sugar level

  • The gland responsible for its secretion is heterocrine gland.


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79.

Assertion: Pituitary is attached to hypothalamus by a vein.

Reason: This attachment hypophysial portal vein.

  • 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.


80.

Assertion: Rabies is acute infectious disease of warm blooded mammals characterised by
involvement of central nervous system resulting in paralysis and finally death.

Reason: This is caused due to neurotropic filterable bacteria in saliva of rabid animals.

  • 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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