Introduction: Antidiuretic hormone (ADH) is also called vasopressin. ADH play role in controlling the amount of water that is resorbed into the blood. The rate at which the glomerulus forms the filtrate is called the glomerular filtration rate (GFR).
Answer to Problem 1TY
Correct answer: If a person drinks excess water, the concentration of ADH in the blood would decrease and GFR would increase. Hence, the correct answer is option e.
Explanation of Solution
Reason for correct answer:
On drinking excess water, there will be an increase in the glomerular filtration rate. This occurs due to an increase in the hydrostatic pressure in the capillaries. If a person drinks excess water, ADH will not be secreted in blood; rather the body of the person will try to remove excess water by decreasing ADH to reduce water resorption.
Option e. is given as “Both b and d would occur”.
If a person consumes excess water, ADH concentration in the blood would decrease and GFR would increase. Hence, the correct answer is option e.
Reasons for incorrect answer:
Option a. is given as, “The GFR would decrease”.
When water consumed by a person is excess, glomerular filtration rate will increase due to an increase in the hydrostatic pressure. Hence, option a. is incorrect.
Option b. is given as, “The concentration of ADH in the blood would decrease”.
ADH increases resorption of water from the distal convoluted tubule into the circulatory fluid. If a person drinks excess water, ADH will not be secreted in blood; rather the body of the person will try to remove excess water by decreasing ADH to reduce water resorption. In such a case, excess urine will also be produced due to an increased GFR. Hence, option b. is incorrect.
Option c. is given as, “The concentration of ADH in the blood would increase”.
ADH helps in the resorption of water. Increase in the level of ADH is seen when a person faces dehydration and not when a person has consumed an excess of water. Hence, option c. is incorrect.
Option d. is given as, “GFR would increase”.
On drinking excess water, the hydrostatic pressure in the capillaries will increase. This will lead to an increase in the glomerular filtration rate. In such a case, excess urine will be produced due to an increased GFR. The body will also try to remove excess water by decreasing ADH, thereby reducing water resorption Hence, option d. is incorrect.
Hence, the options a., b., c. and d. are incorrect.
On drinking too much water, the ADH levels will decrease in the blood and urine formation will be higher due to an increase in the GFR.
Want to see more full solutions like this?
Chapter 49 Solutions
Biology
- which of the follwing is produced by the kidneys? a. Antidiuretic hormone b. renin c. angiotensin II d. aldosteronearrow_forwardWhich does NOT stimulate aldosterone release? a. ANP hormone b. Increase in renin c. increase of plasma K+ concentration d. increase in angiotensin II productionarrow_forwardHow would damage to the renal capillaries resulting in an increase in protein filtration and urinary excretion affect net filtration pressure in the systemic circulation? a. Increase capillary reabsorption due to an increase in interstitial colloid osmotic pressure b. Increase capillary filtration due to an increase in interstitial hydrostatic pressure c. Increase capillary filtration due to a decrease in blood colloid osmotic pressure d. Increase capillary reabsorption due to increased blood hydrostatic pressurearrow_forward
- Which hormone increases Na+ and water reabsorption and K+ secretion? a. antidiuretic hormone b. angiotensin II c. atrial natriuretic peptide d. aldosteronearrow_forwardwhich hormones decreases blood volume and increase urine output? a. Antidiuretic hormone b. Diruetic hormone c. Aldosterone d. Atrial natriuretic hormonearrow_forwardA pt was born with a rare genetic disorder in which the proximal tubules of her nephrons express half the number of aquaporins as normal. What will result? A. reduced reabsorption of water, although as much reabsorption of Na+ as is typical? b. reduced reabsorption of water, Na+ and glucose in the proximal tubules? c. Reduced reabsorption of both water and Na+ in equal proportions? D. Reduced reabsorption of all materials in the proximal tubules.arrow_forward
- When arterial blood pressure drops below normal, which renal function occur as a result of sympathetic nervous system activation? a. Afferent arteriole vasodilation b. Decreased ADH secretion c. Decreased renin secretion d. Afferent arteriole vasoconstrictionarrow_forwardWhat does vasopressin do? A. It increases both urination and thirst. B. It decreases both urination and thirst. C. It decreases urination and increases thirst. D. It increases urination and decreases thirst.arrow_forwardsympathetic vasoconstriction of the efferent arterioles would do what to GFR?a. increase b. decrease c. sustainarrow_forward
- Which of these processes is responsible for kidney function?a. filtration c. reabsorption e. All of these are correct.b. secretion d. Both a and b are correct.arrow_forwardWhich is/are true concerning the glomerular filtration rate? a. The body maintains a nearly constant GFR despite changes in blood pressure, as long as blood pressure is between 80 and 180 mmHg b. Below 80 mmHg, the GFR is controlled by autoregulation c. GFR is under both intrinsic and extrinsic control d. The juxtaglomerular apparatus has access to information about the osmolarity of the filtrate, as well as the blood pressurearrow_forwardWhich force(s) involved in glomerular filtration oppose(s) filtration from the glomerulus into Bowman's capsule? A. plasma osmotic pressure (especially of non-filterable plasma proteins) B. glomerular capillary blood pressure C. Bowman's capsule hydrostatic pressure D. Both of answer choices A and B (but not C) correctly answer the question. E. Both of answer choices A and C (but not B) correctly answer the question.arrow_forward
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education