A decrease in the ionized fraction of serum calcium causes (A) Tetany (B) Rickets (C) Osteomalacia (D) Osteoporosis

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Answer :

Answer : A

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Description : Serum biochemistry of a 60 year old man revealed calcium of 1.98 mmol/l and phosphate of 0.55 mmol/l with an alkaline phosphatase of 450 IU/l.Which among the following mosts suits ... biochemistry? 1) Osteoporosis 2) Osteomalacia 3) Pagets Disease 4) Secondary Hyperparathyroidism 5) Renal failure

Last Answer : Answers-2 Osteomalacia is associated with low calcium and phosphate with raised alkaline phosphatase. Serum biochemistry is normal in osteoporosis. Pagets disease is associated with normal ... renal failure when tertiary hyperparathyroidism sets in there is low calcium with raised phosphate.

Description : Exposure to sunshine and diet rich in fish liver oils, oatmeal and sweet potatoes will not cause the deficiency disease 1. Osteomalacia 2. Osteoporosis and frequent bone fractures 3. Rickets 4. Fatty liver (a) 1, 2 (b) 1, 2, 3 (c) 1, 3 (d) 1, 2, 3, 4

Last Answer : Ans:(b)

Description : Deposition of uric acid crystals at the joint is the cause of - (1) Arthritis (2) Osteoporosis (3) Osteomalacia (4) Rickets

Last Answer : (1) Arthritis Explanation: Gout is a medical condition usually characterized by recurrent attacks of acute inflammatory arthritis- a red, tender, hot, swollen joint. It is caused by elevated ... . The uric acid crystallizes, and the crystals deposit in joints, tendons, and surrounding tissues.

Description : Deposition of uric acid crystals at the joint is the cause of (1) Arthritis (2) Osteoporosis (3) Osteomalacia (4) Rickets

Last Answer : Arthritis

Description : A rise in blood calcium may indicate (A) Paget’s disease (B) Rickets (C) Osteomalacia (D) Hypervitaminosis D

Last Answer : Answer : D

Description : In adults a severe deficiency of vitamin D causes (A) Night blindness (B) Osteomalacia (C) Rickets (D) Skin cancer

Last Answer : Answer : B

Description : Hyperventilation: a. decreases cerebral blood flow b. increases ionized calcium concentration in the serum c. causes hypocapnia d. causes metabolic alkalosis

Last Answer : causes hypocapnia

Description : The product of serum calcium concentration (mg/dl) and serum inorganic phosphorous concentration (mg/dl) is decreased in (A) Rickets (B) Hypoparathyroidism (C) Hyperparathyroidism (D) Renal failure

Last Answer : Answer : A

Description : Hypocalcaemia can occur in all the following except (A) Rickets (B) Osteomalacia (C) Hyperparathyroidism (D) Intestinal malabsorption

Last Answer : Answer : C

Description : Deficiency of Vitamin D leads to (A) Rickets (B) Osteomalacia (C) Xeropthalmia (D) Both (A) and (B)

Last Answer : Answer : D

Description : Calcification of soft tissues can occur in (A) Osteomalacia (B) Rickets (C) Hypervitaminosis D (D) None of these

Last Answer : Answer : C

Description : Bowlegs and knock-knees can occur in (A) Rickets (B) Osteomalacia (C) Both A and B (D) Hypervitaminosis D

Last Answer : Answer : A

Description : Which is NOT a correct consequence of surgical removal of portions of these glands? A) adrenal cortex--bronzing of skin, no glucose at stress, dehydration and death B) thymus--decrease ... change in secondary sex characteristics E) adult thyroid--low pulse rate and body temperature and lethargy

Last Answer : B) thymus--decrease in sex drive and changes in secondary sexual characteristics

Description : Serum inorganic phosphorous decreases in all the following conditions except (A) Hyperparathyroidism (B) Intestinal malabsorption (C) Osteomalacia (D) Chronic renal failure

Last Answer : Answer : D

Description : Which of the following is a skin disease? (1) Rickets (2) Osteomalacia (3) Anaemia (4) Pellagra

Last Answer : (4) Pellagra Explanation: Pellagra is a disease caused by low levels of niacin, also known as vitamin B-3. It's marked by dementia, diarrhea, and dermatitis, also known as “the three Ds”.

Description : Rickets and Osteomalacia is caused due to  the deficiency of?

Last Answer : Vitamin D

Description : Severe deficiency of Vitamin D results in -----. A. scurvy B. rickets (Answer) C. night blindness D. osteomalacia

Last Answer : B. rickets (Answer)

Description : Rickets in children and osteomalacia in adult in caused by deficiency of (a) vit. A (b) vit B (c) vit. C (d) vit D

Last Answer : (d) vit D

Description : In rickets of the common low-phosphate variety, serum phosphate values may go as low as (A) 1–2 mg/100 ml (B) 2–3 mg/100 ml (C) 3–4 mg/100 ml (D) 4–5 mg/100 ml

Last Answer : Answer : A

Description : An increase in carbohydrate metabolism is accompanied by temporary decrease in serum: (A) Calcium (B) Phosphate (C) Iron (D) Sodium

Last Answer : Answer : B

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

Last Answer : Answer : C

Description : Osteomalacia can be prevented by the administration of calcium and a vitamin: (A) A (B) B (C) C (D) D

Last Answer : Answer : D

Description : Clinical uses of Vitamin D do not include (a) Chronic renal failure (b) Hyperparathyroidism (c) Intestinal osteodystrophy (d) Nutritional rickets (e) Osteoporosis

Last Answer : Ans: B

Description : Bisphosphonates are beneficial in the following conditions except: A. Paget's disease B. Senile osteoporosis C. Rickets D. Osteolytic bony metastasis

Last Answer : C. Rickets

Description : Select the correct statement regarding the specific disorder of muscular or skeletal system. (a) Muscular dystrophy - Age related shortening of muscles (b) Osteoporosis - Decrease in bone mass and ... of myosin filaments (d) Gout - Inflammation of joints due to extra deposition of calcium

Last Answer : (b) Osteoporosis – Decrease in bone mass and higher chances of fractures with advancing age

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 : Deficiency of calcium causes (a) Scurvy (b) Rickets (c) Gigantism (d) Addison’s disease

Last Answer : (b) Rickets

Description : Deficiency of vitamin D causes (A) Ricket and osteomalacia (B) Tuberculosis of bone (C) Hypthyroidism (D) Skin cancer

Last Answer : Answer : A

Description : Characteristics of Vitamin D and its metabolites include which one of the following? (a) Act to decrease serum levels of calcium (b) Activation of their Vitamin D receptors increases cellular CAMP ... Vitamin D increase renal excretion of calcium (e) Vitamin D deficiency results in Pager's disease

Last Answer : Ans: C

Description : Calcium - ionized?

Last Answer : DefinitionIonized calcium is calcium that is freely flowing in your blood and not attached to proteins. It is also called free calcium.All cells need calcium in order to work. Calcium helps build strong ... band around the upper arm to apply pressure to the area and make the vein swell with bloo

Description : A striking feature of living cells is a marked difference between the composition of the cytosol and the extracellular milieu. Which of the following statement(s) concerning the mechanisms of maintenance ... d. The selectivity of cell membranes relates only to ions and not organic compounds

Last Answer : Answer: a The survival of the cell requires that cytosolic composition be maintained within narrow limits, despite the constant influx of nutrients and the simultaneous outflow of waste. A ... be altered drastically as a result of regulatory or signaling processes that occur within the cell

Description : Local anesthetics: A. Inhibit transmission of nerve impulses by increasing sodium membrane permeability and the displacement of ionized calcium. B. Are classified as amides or esters. C. Produce peripheral vasodilation. D. Are weak acids.

Last Answer : Answer: BC DISCUSSION: Local anesthetics act within the nerve membrane, where they inhibit transmission of nerve impulses by reducing sodium membrane permeability and the displacement of ionized ... based on this bond. All local anesthetics except cocaine produce vasodilatation and are weak bases

Description : Tetany can occur (A) In primary hyperparathyroidism (B) In secondary hyperparathyroidism (C) In idiopathic hypoparathyroidism (D) After accidental removal of parathyroid glands

Last Answer : Answer : D

Description : Tetany can occur in (A) Hypocalcaemia (B) Hypercalcaemia (C) Alkalosis (D) Hypocalcaemia and alkalosis

Last Answer : Answer : D

Description : Deficiency of thiamine causes (A) Beri beri (B) Scurvy (C) Night blindness (D) Rickets

Last Answer : Answer : A

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

Last Answer : Answer : C

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

Last Answer : Answer : A

Description : After operative removal of the parathyroid glands resulting into hypoparathyroidism the concentration of the serum calcium may drop below (A) 11 mg (B) 10 mg (C) 9 mg (D) 7 mg

Last Answer : Answer : D

Description : Normal total serum calcium level varies between (A) 4–5 mg (B) 9–11 mg (C) 15–20 mg (D) 50–100 mg WATER AND ELECTROLYTE BALANCE 281

Last Answer : Answer : B

Description : The characteristic of hyperparathyroidism is (A) Low serum calcium (B) High serum phosphorous (C) Low serum calcium and high serum phosphorous (D) High serum calcium and low serum phosphate

Last Answer : Answer : D

Description : In Vitamin D poisoning (hyper-vitaminosis) (A) Both serum and urinary “Ca” (B) The serum Ca is low and urinary calcium high (C) The serum “Ca” is increased and urinary “Ca” is normal (D) Both serum and urinary “Ca” are low

Last Answer : Answer : A

Description : The product of serum calcium concentration (mg/dl) and serum inorganic phosphorous concentration (mg/dl) in children is about (A) 30 (B) 40 (C) 50 (D) 60

Last Answer : Answer : C

Description : The product of serum calcium concentration (mg/dl) and serum inorganic phosphorous concentration (mg/dl) in adults is about (A) 30 (B) 40 (C) 50 (D) 60

Last Answer : Answer : A

Description : The most useful test for the diagnosis of acute hemorrhagic pancreatitis during the first few days is (A) Urinary lipase test (B) Serum calcium (C) Urinary amylase (D) Serum amylase

Last Answer : Answer : D

Description : Levels of serum calcium and inorganic phosphorus are increased in (A) Hypervitaminosis D (B) Hypoparathyroidism (C) Hypovitaminosis D (D) None of these

Last Answer : Answer : A

Description : Lymphocytes are responsible for the formation of (A) Serum (B) Plasma (C) Antibody (D) Calcium

Last Answer : Answer : C

Description : An Afro-Carribean male aged 48 years presents with gradual onset of exertional dyspnoea, non productive cough, malaise, weight loss and polyarthralgia. Schirmers test indicates a dry eye. X-ray ... 2) Serum phosphorus 3) Urea and electrolytes 4) Thallium Scan 5) Quantitative Immunoglobulins.

Last Answer : Answers-4 This condition is sarcoidosis. Serum calcium, Serum phosphorus, Chem7 and Chem 20 and Quantitative Immunoglobulins are all used in establishing the diagnosis. Gallium scan is helpful in ... areas of poor perfusion. It is particularly used in cardiology to detect areas of ischaemia.

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 : What causes osteomalacia ?

Last Answer : Osteomalacia is caused by a lack of vitamin A.