Physiology MCQs

Page No. 46

Thyroxine causes all the following except______________?


aDecreased cell metabolism

✓


bIncreased oxygen consumption

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cIncreased pulmonary ventilation

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dIncreased basal metabolism

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Which hormone does not have corresponding release hormone produced in pituitary ?


aTSH

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bProlactin

✓


cACTH

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dFSH

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View Answer Prolactin

The hormone , which stimulates uterus contraction and lets down milk, is_____________?


aProgesterone

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bProlactin

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cProstaglandin

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dOxytocin

✓


View Answer Oxytocin

The primary site of action of antidiuretic hormone is on the_______________?


aDistal tubules and collecting ducts in the kidney

✓


bAfferent arterioles of the glomeruli

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cThirst center in the hypothalamus

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dOsmoreceptors in the hypothalamus

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Features of hypothyroidism does not include______________?


aObseity

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bHypertension

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cHigh TSH levels

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dIncreased risk of infections

✓



Hormone released during increased stress is_____________?


aCortisol

✓


bThyroxine

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cGrowth hormone

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dSomatostatin

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View Answer Cortisol

Which of the following statements about the action of the somatomedin is true ?


aThey inhibit protein synthesis

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bThey antagonize the effect of insulin

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cThey promote growth of bone and cartilage

✓


dThey mediated the local effects of Somatostatin

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Steroid hormones are believed to enter target cells via_______________?


aFacilitated diffusion

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bCarrier – mediated endocytosis

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cCholesterol lined pores in the plasma membrane

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dSimple diffusion

✓


View Answer Simple diffusion

Epinephrine is most closely related in structure to ____________________?


aNiacin

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bTyrosine

✓


cMethionine

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dGlycerol

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View Answer Tyrosine

Contraceptive action of combined pill is mainly due to_______________?


aDecrease in tubal motility

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bPrevents the fertilization

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cPrevents the implantation of fertilized egg

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dInhibits ovulation

✓


View Answer Inhibits ovulation

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