Description : Enhanced facultative reabsorption of water by Vasopressin is mediated by (A) Cyclic AMP (B) Ca++ (C) Cyclic GMP (D) Mg++
Last Answer : Answer : A
Description : ADH or vasopressin is (a) enzyme that hydrolyses peptides (b) hormone secreted by pituitary that promotes reabsorption of water from glomerular filtrate (c) hormone that promotes glycogenolysis (d) energy rich compound connected with muscle contraction.
Last Answer : (b) hormone secreted by pituitary that promotes reabsorption of water from glomerular filtrate
Description : Parathyroid hormone: a. is a peptide hormone b. is released in response to hypocalcaemia c. increases phosphate reabsorption in the kidneys d. increases calcium excretion in the kidneys
Last Answer : is released in response to hypocalcaemia
Description : Match the source gland with its respective hormone and function and select the correct option. Source Hormone Function gland (a) Anterior Oxytocin Contraction of uterus pituitary muscles during ... (c) Corpus Estrogen Supports pregnancy luteum (d) Thyroid Thyroxine Regulates blood calcium level
Last Answer : (b) Posterior Vasopressin Stimulates pituitary reabsorption of water in the distal tubules in the nephron
Description : PTH (A) Reduces the renal clearance or excretion of calcium (B) Increases renal phosphate clearance (C) Increases the renal clearance of calcium (D) Decreases the renal phosphate clearance
Description : Increased reabsorption of water from the kidney is the major consequence of which of the following hormones? (A) Cortisol (B) Insulin (C) Vasopressin (D) Aldosterone
Last Answer : Answer : C
Description : Increased reabsorption of water from the kidney is the major consequence of the secretion of the hormone? (A) Cortisol (B) Insulin (C) Vasopressin (D) Aldosterone
Description : Thiazide diuretics inhibit (A) Carbonic anhydrase (B) Aldosterone secretion (C) ADH secretion (D) Sodium reabsorption in distal tubules
Last Answer : Answer : D
Description : The hormone that increases the blood calcium level and decreases its excretion by kidneys is :
Last Answer : The hormone that increases the blood calcium level and decreases its excretion by kidneys is : A. insulin B. thyroxine C. calcitonin D. parathormone
Description : Aldosterone increases Na+ reabsorption and K+ excretion in the renal collecting duct cells by: A. Inducing synthesis of Na+K+ATPase B. Inducing synthesis of amiloride sensitive Na+ channels C. Translocating Na+ channels from cytosolic site to luminal membrane D. All of the above
Last Answer : D. All of the above
Description : $ The antideuretic hormone (ADH) is also calle Vasopressin hormone. ! Those blood vessels which carry blood away from heart are called capillaries.
Last Answer : $ The antideuretic hormone (ADH) is also calle Vasopressin hormone. ! Those blood vessels which carry blood ... wrong D. If both As and R are wrong.
Description : Antidiuretic hormone (A) Is secreted by hypothalamus (B) Secretion is increased when osmolality of plasma decreases (C) Increases obligatory reabsorption of water (D) Acts on distal convoluted tubules and collecting ducts
Description : ADH resposible for the reabsorption of water and reduction of urine secretion is synthesized by
Last Answer : ADH resposible for the reabsorption of water and reduction of urine secretion is synthesized by ... C. Anterior ptiuitary gland D. Hypothalamus
Description : Antidiuretic hormone (ADH) - (1) inhibits the secretion of growth hormone by the pituitary (2) inhibits the rate of heart beat (3) causes the muscular walls of the arterioles to contract that simulates the reabsorption of water from the kidney tubules (4) causes an increase in the blood pressure
Last Answer : (3) causes the muscular walls of the arterioles to contract that simulates the reabsorption of water from the kidney tubules
Description : Which of the following would help in prevention of diuresis? (a) More water reabsorption due to undersecretion of ADH. (b) Reabsorption of Na+ and water from renal tubules due to ... Atrial natriuretic factor causes vasoconstriction. (d) Decrease in secretion of renin by JG cells. (NEE
Last Answer : (b) Reabsorption of Na+ and water from renal tubules due to aldosterone.
Description : Para-amino hippurate excretion test is an indicator of (A) Glomerular filtration (B) Tubular secretion (C) Tubular reabsorption (D) Renal plasma flow
Description : Phenolsulphonephthalein excretion test is an indicator of (A) Glomerular filtration (B) Tubular secretion (C) Tubular reabsorption (D) Renal blood low
Description : An important finding in glycinuria is (A) Excess excretion of oxalate in the urine (B) Deficiency of enzyme glycinase (C) Significantly increased serum glycine level (D) Defect in renal tubular reabsorption of glycine
Description : Antidiuretic hormone: a. decreases the osmolarity of urine b. decreases the volume of urine c. increases the reabsorption of water in the proximal tubules d. is synthesized in the posterior pituitary gland
Last Answer : decreases the volume of urine
Description : Cyclic nucleotides exert the following action on salt transport across intestinal mucosal cells: A. Both cyclic AMP and cyclic GMP enhance Cland HCO3 - secretion B. Cyclic AMP enhances but cyclic GMP ... Cl- reabsorption D. Both cyclic AMP and cyclic GMP enhance Na+ and Cl- reabsorption
Last Answer : A. Both cyclic AMP and cyclic GMP enhance Cland HCO3 – secreti
Description : Thiazide diuretics enhance K+ elimination in urine primarily by: A. Inhibiting proximal tubular K+ reabsorption B. Inhibiting Na+ K+-2Cl- cotransport in the ascending limb of loop of Henle C ... in the distal tubular fluid to exchange with interstitial K+ D. Potentiating the action of aldosterone
Last Answer : C. Increasing the availability of Na+ in the distal tubular fluid to exchange with interstitial K
Description : The following diuretic acts on the luminal membrane of distal tubule and collecting ducts to inhibit electrogenic Na+ reabsorption so that K+ excretion is diminished and bicarbonate excretion is enhanced: A. Xipamide B. Isosorbide C. Triamterene D. Spironolactone
Last Answer : C. Triamterene
Description : Renal ricket is caused by renal tubular defect (usually inherited) which interferes with reabsorption of (A) Calcium (B) Phosphorous (C) Sodium (D) Chloride
Last Answer : Answer : B
Description : Mineralocorticoids increase the tubular reabsorption of (A) Sodium and calcium (B) Sodium and potassium (C) Sodium and chloride (D) Potassium and chloride 224 MCQs IN BIOCHEMISTRY
Description : PTH causes all of the following except (A) Increased intestinal absorption of calcium (B) Increased intestinal absorption of phosphate (C) Increased tubular reabsorption of calcium (D) Increased tubular reabsorption of phosphate
Description : Tubular reabsorption of calcium is increased by (A) Cholecalciferol (B) 25-Hydroxycholecalciferol (C) Calcitriol (D) All of these
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 : Insulin decreases (A) Glycogenesis (B) Glyolysis (C) Gluconeogenesis (D) Tubular reabsorption of glucose
Description : Amiloride has the following effect on urinary cation excretion: A. Decreases both K+ and H+ ion excretion B. Decreases K+ excretion but increases H+ ion excretion C. Increases K+ but decreases Na+ excretion D. Decreases both Na+ and K+ excretion
Last Answer : A. Decreases both K+ and H+ ion excretion
Description : Hydrocortisone exerts the following actions: A. Increases both K+ and Ca2+ excretion B. Decreases both K+ and Ca2+ excretion C. Decreases K+ but increases Ca2+ excretion D. Increases K+ but decreases Ca2+ excretion
Last Answer : A. Increases both K+ and Ca2+ excretion
Description : Aldosterone increases reabsorption of sodium in (A) Proximal convoluted tubules (B) Ascending limb of loop of Henle (C) Descending limb of loop of Henle (D) Distal convoluted tubules
Description : Assertion: ADH reduces chloride loss in Urine. Reason: ADH decreases water absorption.
Last Answer : Assertion: ADH reduces chloride loss in Urine. Reason: ADH decreases water absorption. A. If both ... false D. If both Assertion and Reason are false
Description : The probable metabolic defect in gents is (A) A defect in excretion of uric acid by kidney (B) An overproduction of pyrimidines (C) An overproduction of uric acid (D) Rise in calcium leading to deposition of calcium urate
Description : The normal route of calcium excretion is (A) Kidney (B) Kidney and Liver (C) Kidney and Intestine (D) Kidney, Intestine and Pancreas
Description : Capillary permeability is increased by: a. bradykinin b. adrenaline c. calcium d. vasopressin
Last Answer : bradykinin
Description : Assertion `:-` Antidiuretic hormone, increases the water permeability of distal convoluted tubule. Reason `:-` In the absence of ADH, water re-absorpt
Last Answer : Assertion `:-` Antidiuretic hormone, increases the water permeability of distal convoluted tubule. Reason ... . If both Assertion & Reason are false.
Description : In a normal nephron: a. the descending loop of Henle is impermeable to water b. anti-diuretic hormone (ADH) increases the permeability of collecting ducts to water c. all the filtered ... in the proximal tubule d. nearly all the filtered protein is reabsorbed in the proximal convoluted tubule
Last Answer : nearly all the filtered protein is reabsorbed in the proximal convoluted tubule
Description : Select the correct matching of a hormone, its source and function. Hormone Source Function (a) Vasopressin Posterior Increases loss pituitary of water through urine (b) Norepine- Adrenal ... (d) Prolactin Posterior Regulates growth pituitary of mammary glands and milk formation in females
Last Answer : (b) Norepine- Adrenal Increases heart phrine medulla beat, rate of respiration and alterness
Description : All of the following statements about allopurinol are true except (A) It is a structural analogue of uric acid (B) It can prevent uric acid stones in the kidneys (C) It increases the urinary excretion of xanthine and hypoxanthine (D) It is a competitive inhibitor of xanthine oxidase
Description : Anti-diuretic diuretic hormone (ADH) a. is synthesized by the posterior lobe of the pituitary gland b. is released by neurosecretion c. its secretion is increased by a low plasma osmolarity d. increases the permeability of the distal convoluted tubule
Last Answer : is released by neurosecretion
Description : ADH (A) Reabsorbs water from renal tubules (B) Excretes water from renal tubules (C) Excretes hypotonic urine (D) Causes low specific gravity of urine 210 MCQs IN BIOCHEMISTRY
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 : Aldosterone: a. increases mRNA synthesis b. deficiency results in hypotension c. increases sodium reabsorption from sweat d. all above
Last Answer : all above
Description : Diabetes insipidus results from (A) Decreased insulin secretion (B) Decreased ADH secretion (C) Decreased aldosterone secretion (D) Unresponsiveness of osmoreceptors
Description : Vasoconstrictor effect of ADH is mediated by (A) cAMP (B) cGMP (C) Protein kinase C (D) Angiotensin II
Description : Tyrosine kinase activity is present in (A) Acetylcholine receptor (B) PDGF receptor (C) ADH receptor (D) All of these
Description : Cyclic AMP acts as the second messenger for (A) ADH (B) Glucagon (C) Calcitonin (D) All of these
Description : An increase in the osmolality of extracellular compartment will (A) Inhibit ADH secretion (B) Stimulate ADH secretion (C) Cause no change in ADH secretion (D) Stimulate the volume and osmoreceptor and inhibit ADH secretion
Description : Urine specific gravity of 1.054 indicates (A) Excellent renal function (B) Inappropriate secretion of ADH (C) Extreme dehydration (D) Presence of glucose or protein
Description : ADH test is based on the measurement of (A) Specific gravity of urine (B) Concentration of urea in urine (C) Concentration of urea in blood (D) Volume of urine in ml/minute
Last Answer : A