Description : The part of nephron involved in active reabsorption of sodium is (a) distal convoluted tubule (b) proximal convoluted tubule (c) Bowman’s capsule (d) descending limb of Henle’s loop.
Last Answer : (b) proximal convoluted tubule
Description : Which one of the following statements in regard to the excretion by the human kidneys is correct? (a) Descending limb of loop of Henle is impermeable to water. (b) Distal convoluted tubule is ... reabsorbed by the renal tubules. (d) Ascending limb of loop of Henle is impermeable to electrolytes.
Last Answer : (c) Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules.
Description : The maximum amount of electrolytes and water (70 – 80 percent) from the glomerular filtrate is reabsorbed in which part of the nephron? (a) Ascending limb of loop of Henle (b) Distal convoluted tubule (c) Proximal convoluted tubule (d) Descending limb of loop of Henle
Last Answer : (c) Proximal convoluted tubule
Description : The Na+ retaining action of aldosterone is exerted on the: A. Proximal convoluted tubule B. Ascending limb of loop of Henle C. Cortical diluting segment D. Distal convoluted tubul
Last Answer : D. Distal convoluted tubule
Description : The final concentration of the fluid to produce a markedly hypertonic urine takes place in (a) Loop of Henle (b) Distal convoluted tubule (c) Collecting tubule (d) Both (b) and (c)
Last Answer : Ans:(c)
Description : Which one of the following correctly explains the function of a specific part of the human nephron? (a) Podocytes : create minute spaces (slit pores) for the filtration of blood into the ... blood capillaries (d) Afferent arteriole : carries the blood away from the glomerulus towards renal vein.
Last Answer : (a) Podocytes : create minute spaces (slit pores) for the filtration of blood into the Bowman’s capsule
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
Last Answer : Answer : D
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 : Match the items given in column I with those in column II and select the correct option given below. Column I Column II (Function) (Part of excretory system) A. Ultrafiltration (i) Henle's loop B. Concentration (ii) Ureter of urine C. ... (ii) (iii) (c) (v) (iv) (i) (ii) (d) (v) (iv) (i) (iii)
Last Answer : (b) (iv) (i) (ii) (iii)
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 : If a bathing fluid has the same osmotic pressure than the cell it called a. Isotonic b. Hypertonic c. hypotonic d. all
Last Answer : Isotonic
Description : If a bathing fluid has higher osmotic pressure than the cell it is called a. Isotonic b. hypotonic c. hypertonic d. all
Last Answer : hypertonic
Description : If a bathing fluid has a lower osmotic pressure than the cell, it is called a. Isotonic b. hypotonic c. hypertonic d. All
Last Answer : hypotonic
Description : Reabsorption of useful substances from glomerular filtrate occurs in (a) collecting tube (b) loop of Henle (c) proximal convoluted tubule (d) distal convoluted tubule.
Last Answer : (c) proximal convoluted tubule
Description : Which one of the four parts mentioned below does not constitute a part of single uriniferous tubule? (a) Distal convoluted tubule (b) Collecting duct (c) Bowman’s capsule (d) Loop of Henle
Last Answer : (b) Collecting duct
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 : The primary site of action of thiazide diuretics is: A. Proximal tubule B. Ascending limb of loop of Henle C. Cortical diluting segment D. Collecting ducts
Last Answer : C. Cortical diluting segment
Description : Human urine as compared to human blood is (a) hypotonic (b) hypertonic (c) isotonic (d) all of these
Last Answer : Ans:(b)
Description : From the biological viewpoint, solutions can be grouped into (A) Isotonic solution (B) Hypotonic solutions (C) Hypertonic solution (D) All of these
Last Answer : D
Description : A cell increases in volume when it is placed in - (1) Hypertonic solution (2) Hypotonic solution (3) Isotonic solution (4) None of these
Last Answer : (2) Hypotonic solution Explanation: When a cell is placed in a hypotonic solution, water rushes into the membrane, increasing the cell's volume. Eventually, the cell's membrane is enlarged such that it pushes against the cell's rigid wall. At this point the cell is said to be turgid.
Description : The plant cell will shrink when placed in (1) An isotonic solution (2) Hypertonic solution (3) Hypotonic solution (4) Water
Last Answer : (2) Hypertonic solution Explanation: If a plant cell is placed in a hypertonic solution, the plant cell loses water and hence turgor pressure by plasmolysis: pressure decreases to the point where ... leaving gaps between the cell wall and the membrane and making the plant cell shrink and crumple.
Description : Swelling/bursting of red cell occurs in a. Isotonic solution b. hypotonic solution c. hypertonic solution d. all
Last Answer : hypotonic solution
Description : Crenation of Red cell occur, in a. Isotonic solution b. hypertonic solution c. hypotonic solution d. all
Last Answer : hypertonic solution
Description : Which of the following solutions is hypotonic? a) 0.45% NaCl. Half-strength saline is hypotonic b) Lactated Ringer’s solution. Lactated Ringer’s is isotonic. c) 0.9% NaCl. Normal saline (0.9% NaCl) is isotonic. d) 5% NaCl. A solution that is 5% NaCl is hypertonic.
Last Answer : a) 0.45% NaCl. Half-strength saline is hypotonic
Description : In osmosis the flow of SOLVENT moves in what direction of tonicity? a) isotonic to hypotonic b) hypotonic to hypertonic c) hypertonic to isotonic d) hypertonic to hypotonic
Last Answer : ANSWER: B -- HYPOTONIC TO HYPERTONIC
Description : A cell increases in volume when it is placed in (1) Hypertonic solution (2) Hypotonic solution (3) Isotonic solution (4) None of these
Last Answer : Hypotonic solution
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 : Which of the following causes an increase in sodium reabsorption in the distal convoluted tubule
Last Answer : Which of the following causes an increase in sodium reabsorption in the distal convoluted tubule ... levels D. Decrease in antidiuretic hormone levels
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 : The Na+-Cl– symport in the early distal convoluted tubule of the kidney is inhibited by: A. Thiazides B. Metolazone C. Xipamide D. All of the above
Last Answer : D. All of the above
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 : Furosemide inhibits reabsorption of sodium and chloride in (A) Proximal convoluted tubules (B) Loop of Henle (C) Distal convoluted tubules (D) Collecting ducts
Last Answer : Answer : B
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 : In the human kidney: a. renal plasma flow is normally 660 ml/minute b. blood flow in the cortex is greater than that in the medulla c. resorption of ions and water ... the distal convoluted tubules d. anti-diuretic hormone increases water resorption mainly in the distal convoluted tubules
Last Answer : blood flow in the cortex is greater than that in the medulla
Description : What for the ascending limb of Loop of Henle is permeable
Last Answer : What for the ascending limb of Loop of Henle is permeable A. Glucose B. `NH_(3)` and `CO_(2)` C. `Na^(+)` D. Water
Description : Descending limp of loop of henle is -___ and ascending limb is ____to water
Last Answer : Descending limp of loop of henle is -___ and ascending limb is ____to water
Description : Which of the following statements is correct? (a) The descending limb of loop of Henle is impermeable to water. (b) The ascending limb of loop of Henle is permeable to water. (c) The ... Henle is permeable to electrolytes. (d) The ascending limb of loop of Henle is impermeable to water.
Last Answer : (d) The ascending limb of loop of Henle is impermeable to water.
Description : The following is true of mannitol except: A. It inhibits solute reabsorption in the thick ascending limb of loop of Henle B. It is contraindicated in patients with increased intracranial tension C. It ... acute left ventricular failure D. It is not used to treat cardiac or hepatic or renal edema
Last Answer : B. It is contraindicated in patients with increased intracranial tension
Description : Which of the following statements is correct ? (1) The descending limb of loop of Henle is impermeable to water. (2) The ascending limb of loop of Henle is permeable to water. (3) The ... of Henle is permeable to electrolytes. (4) The ascending limb of loop of Henle is impermeable to water.
Last Answer : (4) The ascending limb of loop of Henle is impermeable to water.
Description : Assertion : Kidneys maintain the osmotic concentration of the blood . Reason : Kidneys eliminate either hypotonic or hypertonic urine according to the
Last Answer : Assertion : Kidneys maintain the osmotic concentration of the blood . Reason : Kidneys eliminate either ... D. If both Assertion and Reason are false
Description : Which is false regarding freshwater fish? a) their blood is hypertonic to their environment b) they often actively take up salt c) they excrete urine hypotonic to the blood d) their gills actively excrete salts
Last Answer : ANSWER: D -- THEIR GILLS ACTIVELY EXCRETE SALTS
Description : Assertion `:-` Proximal convoluted tubule is lined by brush-bordered cuboidal epithelium. Reason `:-` PCT is main site of selective reabsorption of us
Last Answer : Assertion `:-` Proximal convoluted tubule is lined by brush-bordered cuboidal epithelium. Reason `:-` ... D. If both Assertion & Reason are false.
Description : Removal of proximal convoluted tubule from the nephron will be result in
Last Answer : Removal of proximal convoluted tubule from the nephron will be result in A. More concentrated urine B. ... C. No urine formation D. More diluted urine
Last Answer : Removal of proximal convoluted tubule from the nephron will be result in A. No urine formation B. ... D. No change in quality and quantity of urine
Description : Brush border is characteristic of (a) neck of nephron (b) collecting tube (c) proximal convoluted tubule (d) all of these.
Description : Removal of proximal convoluted tubule from the nephron will result in (a) no change in quality and quantity of urine (b) no urine formation (c) more diluted urine (d) more concentrated urine.
Last Answer : (c) more diluted urine
Description : Cuboidal epithelium with brush border of microvilli is found in (a) lining of intestine (b) ducts of salivary glands (c) proximal convoluted tubule of nephron (d) Eustachian tube
Last Answer : c) proximal convoluted tubule of nephron
Description : Choose the correct statement about thiazide diuretics: A. They act in the proximal convoluted tubule B. They are uricosuric C. They augment corticomedullary osmotic gradient D. They induce diuresis in acidosis as well as alkalosis
Last Answer : D. They induce diuresis in acidosis as well as alkalosis
Description : What structure is between the proximal and distal convoluted tubules?
Last Answer : Need answer