Description : The blood calcium level is lowered by the deficiency of (a) both calcitonin and parathormone (b) calcitonin (c) parathormone (d) thyroxine
Last Answer : (c) parathormone
Description : Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other? (a) Aldosterone Atrial Natriuretic Factor (b) Relaxin Inhibin (c) Parathormone Calcitonin (d) Insulin Glucagon
Last Answer : (b) Relaxin Inhibin
Description : Which of the following hormone is not under the control of ACTH? (A) Aldosterone (B) Cortisol (C) Corticosterone (D) Deoxycorticosterone
Last Answer : Answer : A
Description : A high plasma calcium level decreases intestinal absorption of calcium by (A) Stimulating the secretion of parathormone (B) Inhibiting the secretion of parathormone (C) Decreasing the synthesis of cholecalciferol (D) Inhibiting the secretion of thyrocalcitonin
Last Answer : Answer : B
Description : Bone resorption is accelerated by: A. Estrogens B. Parathormone C. Bisphosphonates D. Calcitonin
Last Answer : B. Parathormone
Description : The following are true about calcium regulating hormones: a. calcitonin increases the plasma calcium concentration b. vitamin D is produced in the skin c. vitamin D is metabolized to its active form in the liver and kidney. d. vitamin D increases calcium absorption from the gut
Last Answer : vitamin D increases calcium absorption from the gut
Description : Which hormone possesses anti-insulin effect? (a) Cortisol (b) Calcitonin (c) Oxytocin (d) Aldosterone
Last Answer : (a) Cortisol
Description : Which hormone will increase blood glucose levels? A) thyroxin B) aldosterone C) cortisol D) insulin E) calcitonin
Last Answer : C) cortisol
Description : Aldosterone secretion is controlled by: a. plasma sodium concentration b. plasma calcium concentration c. plasma potassium concentration d. angiotensin II
Last Answer : angiotensin II
Description : Calcitonin causes (A) Calcinuria and phosphaturia (B) Decrease in urinary calcium (C) Decrease in urinary phosphorous (D) Increase in blood calcium level 212 MCQs IN BIOCHEMISTRY
Description : A common intermediate in the synthesis of estrogens is (A) Cortisol (B) Andostenedione (C) Corticosterone (D) 11-Deoxycorticosterone
Description : Parathormone influences calcium absorbton in the small intestine by regulating the metabolim of
Last Answer : Parathormone influences calcium absorbton in the small intestine by regulating the metabolim of A. Vitamin C ... D C. Vitamin `B_6` D. Enterogastrone
Description : The drug of choice for hypoparathyroidism is: A. Parathormone B. Calcium lactate C. Vitamin D D. Pamidronate
Last Answer : C. Vitamin D
Description : Which of the following statements regarding hypercalcemia are true? A. The symptoms of hypercalcemia may mimic some symptoms of hyperglycemia. B. Metastatic breast cancer is an unusual cause of ... fluid volume deficit. E. Urinary calcium excretion may be increased by vigorous volume repletion.
Last Answer : Answer: ADE DISCUSSION: Markedly elevated serum calcium levels produce polydipsia, polyuria, and thirst. Vigorous volume repletion and saline diuresis correct the extracellular fluid volume ... , from bony metastasis. The calcitonin effect on calcium is diminished with repeat administrations
Description : Calcitonin is a thyroid hormone which (a) elevates calcium level in blood (b) has no effect on calcium (c) elevates potassium level in blood (d) lowers calcium level in blood.
Last Answer : (d) lowers calcium level in blood.
Description : Which statement is NOT correct about PTH? A) When calcium level rises, PTH secretion is inhibited. B) When calcium level lowers, PTH secretion is stimulated. C) PTH has the opposite effect of ... . D) PTH stimulates calcium absorption from the gut. E) PTH decreases the activity of osteoclasts.
Last Answer : E) PTH decreases the activity of osteoclasts.
Description : The drug used for controlling tetany is: A. Intravenous diazepam B. Intramuscular vitamin D C. Intravenous calcium gluconate D. Intravenous calcitonin
Last Answer : C. Intravenous calcium gluconate
Description : A steroid hormone which regulates glucose metabolism is (a) cortisone (b) cortisol (c) corticosterone (d) 11-deoxycorticosterone.
Last Answer : (b) cortisol
Description : Women become susceptible to osteoporosis after menopause due to decreased (A) Secretion of Parathormone (B) Conversion of vitamin D into calcitriol (C) Secretion of estrogen (D) Secretion of progesterone
Last Answer : Answer : C
Description : The sequence of amino acid in which the biological value of parathormone is (A) 1–15 (B) 1–34 (C) 30–50 (D) 50–84
Description : The number of amino acids in parathormone is (A) 65 (B) 84 (C) 115 (D) 122
Description : Parathormone is required for the conversion of (A) Cholecalciferol into 1-hydroxycholecalciferol (B) Cholecalciferol into 25-hydroxycholecalciferol (C) 25-Hydroxycholecalciferol into calcitriol (D) Cholesterol into 7-dehydrocholesterol
Description : Raised plasma aldosterone level in CHF contributes to disease progression by exerting the following effects except: A. Fibrotic remodeling of myocardium B. Hyperkalemia and hypermagnesemia C. ... cardiac preload by Na+ and water retention D. Enhancing cardiotoxicity of sympathetic overactivity
Last Answer : B. Hyperkalemia and hypermagnesemia
Description : Bradykinin and angiotensin II have the following feature common to both: A. They both cause fall in BP B. They both are degraded by Kininase II C. Their precursor proteins are plasma α2 globulins D. They both release aldosterone from adrenal cortex
Last Answer : C. Their precursor proteins are plasma α2 globulins
Description : The blood calcium level is lowered by the deficiency of
Last Answer : The blood calcium level is lowered by the deficiency of A. Both calcitonin and parathormone B. Calcitonin C. Parathormone D. Thyroxine
Description : Choose the correct statement about amiloride: A. It antagonises the action of aldosterone B. It can be used to treat lithium induced diabetes insipidus C. It increases calcium loss in urine D. It is dose to dose less potent than triamterene
Last Answer : B. It can be used to treat lithium induced diabetes insipidus
Description : Which of one of the following is not GUT hormone? (A) Motiline (B) Secretion (C) Gastrin (D) Calcitonin
Last Answer : Answer : D
Description : Cyclic AMP acts as the second messenger for (A) ADH (B) Glucagon (C) Calcitonin (D) All of these
Description : The number of amino acids in the peptide hormone calcitonin is (A) 16 (B) 24 (C) 32 (D) 40
Description : Calcitonin is synthesised in (A) Parathyroid glands (B) Thyroid gland (C) Pars intermedia of pituitary (D) Adrenal cortex
Description : The number of amino acid residues in calcitonin in (A) 9 (B) 32 (C) 51 (D) 84
Description : A high concentration of PTH in blood causes (A) Increase in plasma calcium and inorganic phosphorous (B) Decrease in plasma calcium and inorganic phosphorous (C) Increase in plasma calcium ... in plasma inorganic phosphorous (D) Decrease in plasma calcium and increase in plasma inorganic phosphorous
Description : Secretion of PTH is regulated by (A) Hypothalamus (B) Anterior pituitary (C) Feedback effect of plasma PTH (D) Feedback effect of plasma calcium
Description : Which of the normal range of ionized calcium in plasma is (A) 2-4 mg/dl (B) 2-4 mEq/L (C) 4-5 mg/dl (D) 4-5 mEq/L
Description : The normal range of plasma calcium is (A) 3-5 mg/dl (B) 5-10 mg/dl (C) 9-11 mg/dl (D) 11-15 mg/dl
Description : Lymphocytes are responsible for the formation of (A) Serum (B) Plasma (C) Antibody (D) Calcium
Description : In hypoparathyroidism (A) Plasma calcium and inorganic phosphorous are low (B) Plasma calcium and inorganic phosphorous are high (C) Plasma calcium is low and inorganic phosphorous high (D) Plasma calcium is high and inorganic phosphorous low
Description : A 35 year old male presents with weakness and tiredness. He is noted to be hyertensive. Electrolytes show a hypokalaemia and a hypomagnesaemia. What investigation would you select for this patient? ... Plasma renin toaldosterone ratio 3) Serum amylase 4) Serum calcium 5) Oral glucose tolerance test
Last Answer : Answers-2 The hypokalaemic hypertension with hypomagnesaemia suggests primary hyperaldosteronism. The most reliable assessment for this would be renin to aldosterone ratio.
Description : A 55 year-old female complaining of vague tiredness is found to have a serum corrected calcium concentration of 2.9 mmol/l. Examination was unremarkable. Which of the following results ... 4) Low normal plasma phosphate concentration 5) Low normal serum 25-hydroxyvitamin D concentration
Last Answer : Answers-3 Bit too easy really. A high or even normal PTH concentration in the presence of hypercalcaemia would support the diagnosis of hyperparathyroidism. A high urinary Calcium concentration may ... but neither confirm the diagnosis. Elevated 1,25 VitD suggests a diagnosis of hypervitaminosis D.
Description : When phosphorous level is lowered ? (A) In hyper thyroidism (B) Cirrosis of liver (C) Leukemia (D) Hypothyroidism
Description : B.M.R. is lowered in (A) Hypothyroidism (B) Leukemia (C) Cardiac failure (D) Hyperthyroidism
Description : Urea clearance is lowered in (A) Acute nephritis (B) Pneumonia (C) Early stage of nephritic syndrome (D) Benign hypertension
Description : The solubility of most proteins is lowered at high salt concentrations is called as (A) Salting in process (B) Salting out process (C) Isoelectric focussing(D) None of these
Description : Parathormone is secreted during
Last Answer : Parathormone is secreted during A. Increased blood calcium level B. Decreased blood calcium level C ... sugar level D. Decrease blood sugar level
Description : Parathormone induces
Last Answer : Parathormone induces A. Increase in blood sugar level B. Decrease in serum calcium level C. ... calcium level D. Decrease in blood sugar level
Description : Parathormone deficiency causes
Last Answer : Parathormone deficiency causes A. Goiter B. Hypocalcemia C. Hypercalcemia D. All of the above
Description : Which gland produces the enzyme parathormone?
Last Answer : Parathyroid
Description : Duodenum has characteristic Brunner’s gland which secrete two hormones called (a) kinase, estrogen (b) secretin, cholecystokinin (c) prolactin, parathormone (d) estradiol, progesterone
Last Answer : (b) secretin, cholecystokinin
Description : A diuretic which is an aldosterone antagonist is (A) Spironolactone (B) Ethacrynic acid (C) Acetazolamide (D) Chlorothiazide
Description : Thiazide diuretics inhibit (A) Carbonic anhydrase (B) Aldosterone secretion (C) ADH secretion (D) Sodium reabsorption in distal tubules