Description : The following are true about aldosterone: a. it is secreted by the adrenal medulla b. its secretion is stimulated by decreased blood volume c. it stimulates active reabsorption of sodium in the distal renal tubules. d. it causes increased secretion of potassium by the distal renal tubules.
Last Answer : it causes increased secretion of potassium by the distal renal tubules.
Description : Assertion `:-` Angiotensin II, activates the adrenall cortex to release aldosterone. Reason `:-` Aldosterone causes reabsorption of `Na^(o+)` and wate
Last Answer : Assertion `:-` Angiotensin II, activates the adrenall cortex to release aldosterone. Reason `:-` ... D. If both Assertion & Reason are false.
Description : Assertion `:-` Angiotensin II is a powerful vasconstrictor Reason `:-` Aldosterone causes reabsorption of `Na^(+)` and water from distal parts of the
Last Answer : Assertion `:-` Angiotensin II is a powerful vasconstrictor Reason `:-` Aldosterone causes reabsorption of ... D. If both Assertion & Reason are false.
Description : Thiazide diuretics inhibit (A) Carbonic anhydrase (B) Aldosterone secretion (C) ADH secretion (D) Sodium reabsorption in distal tubules
Last Answer : Answer : D
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 : The most important effect of aldosterone is to (A) Increase the rate of tubular reabsorption of sodium (B) Decrease the rate of tubular reabsorption of potassium (C) Decrease the reabsorption of chloride (D) Decrease the renal reabsorption of sodium
Last Answer : Answer : A
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 : Aldosterone: a. increases mRNA synthesis b. deficiency results in hypotension c. increases sodium reabsorption from sweat d. all above
Last Answer : all above
Description : Which of the following causes an increase in sodium reabsorption in the distal convoluted tubule? (a) Increase in aldosterone levels (b) Increase in antidiuretic hormone levels (c) Decrease in aldosterone levels (d) Decrease in antidiuretic hormone levels
Last Answer : (a) Increase in aldosterone levels
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 : 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 : Nonsteroidal antiinflammatory drugs reduce the diuretic action of furosemide by: A. Preventing prostaglandin mediated intrarenal haemodynamic actions B. Blocking the action in ascending limb of loop ... C. Enhancing salt and water reabsorption in distal tubule D. Increasing aldosterone secretion
Last Answer : A. Preventing prostaglandin mediated intrarenal haemodynamic actions
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 : Angiotensin III is equipotent to angiotensin II in: A. Releasing aldosterone from adrenal cortex B. Promoting Na+ and water reabsorption by direct intrarenal action C. Causing vasoconstriction D. Contracting intestinal smooth muscle
Last Answer : A. Releasing aldosterone from adrenal cortex
Description : Aldosterone enhances Na+ reabsorption in renal tubules by: A. Stimulating carbonic anhydrase B. Activating Na+ K+ ATPase C. Inducing the synthesis of Na+ K+ ATPase D. Inducing renal prostaglandin synthesis
Last Answer : C. Inducing the synthesis of Na+ K+ ATPase
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 : Read the following points `:-` (i) Increase GFR (ii) Increase B.P. (iii) Decreases blood volume (iv) Increases aldosterone secretion (v) Vasoconstrict
Last Answer : Read the following points `:-` (i) Increase GFR (ii) Increase B.P. (iii) Decreases blood volume (iv) ... II ? A. Two B. Three C. Four D. Five
Description : Which part of nephron is effected by aldosterone ?
Last Answer : Which part of nephron is effected by aldosterone ? A. P.C.T. B. Late part of C.T. C. D.C.T. D. Duct of bellini
Description : Secretion of aldosterone in birds, man, and other mammals is stimulated by
Last Answer : Secretion of aldosterone in birds, man, and other mammals is stimulated by A. Fall in the ... the `Ca^(++)` concentration in blood plasma
Description : A diuretic which is an aldosterone antagonist is (A) Spironolactone (B) Ethacrynic acid (C) Acetazolamide (D) Chlorothiazide
Description : Diabetes insipidus results from (A) Decreased insulin secretion (B) Decreased ADH secretion (C) Decreased aldosterone secretion (D) Unresponsiveness of osmoreceptors
Last Answer : Answer : B
Description : Potassium metabolism is regulated by the hormone: (A) Aldosterone (B) PTH (C) Somatostatin (D) Estrogen
Description : The metabolism of sodium is regulated by the hormone: (A) Insulin (B) Aldosterone (C) PTH (D) Somatostatin
Description : Which of the following hormone is not under the control of ACTH? (A) Aldosterone (B) Cortisol (C) Corticosterone (D) Deoxycorticosterone
Description : The most potent hormone concerned with the retention of sodium in the body is (A) Cortisone (B) Aldosterone (C) Corticosterone (D) Cortisol
Description : Spironolactone is an antagonist of (A) Cortisol (B) Hydrocortisone (C) Aldosterone (D) Testosterone
Description : All the following statements about transcortin are true except (A) It is synthesised in liver (B) It transports glucocorticoids (C) It transports aldosterone (D) It transports progesterone
Description : A common intermediate in the synthesis of cortisol and aldosterone is (A) Progesterone (B) Testosterone (C) Estradiol (D) None of these
Description : The major mineralcorticoid is (A) Hydrocortisone (B) Aldosterone (C) Aldactone A (D) Androstenedione
Description : The precursor of testosterone is (A) Aldosterone (B) Methyl testosterone (C) Estrone (D) Pregnenolone
Description : A hormone which cannot cross the blood brain barrier is (A) Epinephrine (B) Aldosterone (C) ACTH (D) TSH
Description : Aldosterone release is stimulated by (A) α2-Globulin (B) Renin (C) Angiotensin II (D) Growth hormone
Description : One of the potent st imu lators of aldosterone secretion is (A) Increased sodium concentration (B) Decreased potassium concentration (C) Increased potassium concentration (D) Increased ECF volume
Description : Aldosterone synthesis occurs in (A) Zona reticularis (B) Zona fasciculata (C) Zona glomerulosa (D) Chromaffian cells
Description : The predominant glucocorticoid is (A) Cortisol (B) Aldosterone (C) Dehydroephiandrosterone (D) Androstenedione
Description : Methyl dopa decreases blood pressure by (A) Inhibiting the synthesis of catecholamines (B) Antagonising the action of aldosterone (C) Stimulating the release of renin (D) Inhibiting the breakdown of angiotensin
Description : All the following statements about angiotensin are true except (A) Its precursor is an α2-globulin (B) Its active form is an octapeptide (C) It is a vasodilator (D) It increases the secretion of aldosterone
Description : Plasma calcium is lowered by (A) Parathormone (B) Calcitonin (C) Aldosterone (D) Deoxycorticosterone
Description : A 55-year-old male undergoes a total abdominal colectomy. Which of the following statement(s) is/are true concerning the hormonal response to the surgical procedure? a. Adrenocorticotropic ... in serum insulin and a fall in glucagon accelerate hepatic glucose production and maintain gluconeogenesis
Last Answer : Answer: a, c One of the earliest consequence of a surgical procedure is the rise in levels of circulating cortisol that occur in response to a sudden outpouring of ACTH ... hepatic glucose production, and, with other hormones (epinephrine and glucocorticoids), gluconeogenesis is maintained
Description : In the autonomic regulation of blood pressure (a) Cardiac output is maintained constant at the expense of other hemodynamic variables (b) Elevation of blood pressure results in elevated ... the sensitivity of the sensory baroreceptor nerve endings might cause an increase in sympathetic discharge
Last Answer : Ans: D
Description : Following potassium sparing diuretic inhibits action of aldosterone (a) Amiloride (b) Triamterene (c) Spironolactone (d) All of the above
Last Answer : Ans: C
Description : Activation of endothelin receptor ETA, leads to (a) Vasoconstriction (b) Bronchoconstriction (c) Aldosterone release (d) All of the above
Description : Aldosterone release is stimulated by (a) Angiotensin I (b) Angiotensin (c) Angiotensin III (d) Both (b) and (c)
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 : Regarding the kidneys: a. there are 1.3 millions nephrons in each kidney b. they produce the aldosterone c. they receive 12% of the cardiac output when at rest d. they produce 1.25-dihydroxycalciferol
Last Answer : they produce 1.25-dihydroxycalciferol
Description : Urine volume is increased with: a. carbonic anhydrase inhibitors b. hyperglycaemia c. increased aldosterone secretion d. damage to the posterior pituitary
Last Answer : damage to the posterior pituitary
Description : Actions of angiotensin II include: a. increases the release of aldosterone b. reduces renin release from the kidney c. vasodilatation d. promotes microalbuminuria
Last Answer : promotes microalbuminuria
Description : The following are true about the hormones secreted by the adrenal cortex: a. zona fasciculata secretes cortisol b. zona glomerulosa secretes aldosterone c. secretion of aldosterone is stimulated by ACTH d. all
Last Answer : all