CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
10th Edition
ISBN: 9780136538820
Author: Taylor
Publisher: INTER PEAR
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 25, Problem 25TYK
Scientists have found that the quantity of aquaporin molecules inserted in the membranes of collecting duct cells changes in response to ADH levels. Draw a line graph proposing a relationship between ADH levels and its effect on the quantity of - aquaporins. Additionally, explain how the relationship between ADH and aquaporins corresponds to situations of dehydration and hydration.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
One model of the glomerular membrane is a microporous membrane in which right cylindrical pores penetrate all the way through the membrane. Assume that the pores have a length of 50 nm and a radius of 3.5 nm. The viscosity of plasma is 0.002 Pa s. The average hydrostatic pressure in the glomerulus is 60 mm Hg, hydrostatic pressure in Bowman's space is 20 mm Hg and the average oncotic pressure of glomerular capillary blood is 28 mm Hg. A. Calculate the flow through a single pore assuming laminar flow (use the Poiseuille flow equation) B. How many pores would there have to be to produce a normal GFR? C. If the total aggregate area of the kidneys for filtration is 1.5 m2, what is the density of the pores (number of pores per unit area)? D. What fraction of the area is present as pores?
Present the rationale for clinical applications of renin-angiotensin inhibitors. What are the major side effects?
Define the following terms:
b. Isosmotic solutions
c. Intravenous fluid Infiltration
2.What precautionary measures should be observed when isotonic solutions are used?
3. What precautionary measures should be observed when hypotonic solutions are used?
4. What are the Two types of feedback loops? Illustrate and explain briefly.
5. Complete the table below
Chapter 25 Solutions
CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
Ch. 25 - Complete this map, which presents the three main...Ch. 25 - In this schematic of urine production in a...Ch. 25 - Prob. 3TYKCh. 25 - In each nephron of the kidney, the glomerulus and...Ch. 25 - As filtrate passes through the loop of Henle, salt...Ch. 25 - Birds and insects excrete uric acid, whereas...Ch. 25 - Prob. 7TYKCh. 25 - Match each of the following components of blood...Ch. 25 - Prob. 9TYKCh. 25 - Prob. 10TYK
Ch. 25 - Prob. 11TYKCh. 25 - Match each of the following components of blood...Ch. 25 - Prob. 13TYKCh. 25 - Prob. 14TYKCh. 25 - Prob. 15TYKCh. 25 - Compare the water and salt regulation in a salmon...Ch. 25 - Prob. 17TYKCh. 25 - Prob. 18TYKCh. 25 - Some diuretics are on a list of substances that...Ch. 25 - Prob. 20TYKCh. 25 - Prob. 21TYKCh. 25 - Prob. 22TYKCh. 25 - Prob. 23TYKCh. 25 - Prob. 24TYKCh. 25 - Scientists have found that the quantity of...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Describe the actions of aquaporins. Which aquaporins are always present and where and which are only present when stimulated by ADH and where.arrow_forwardEnalaprilat is a competitive inhibitor of the angiotensin-converting enzyme (ACEACE), which cleaves the blood-pressure regulating peptide angiotensin I. ACEACE has a KM=52KM=52 μMμM for angiotensin I, which is present in plasma at a concentration of 75 μMμM. When enalaprilat is present at 2.4 nMnM, the activity of ACE in plasma is 14 %% of its uninhibited activity. What is the value of KIKI for enalaprilat?arrow_forwardWhich of the following is an effect of ADH interaction with the vasopressin receptor? Answers A - D A Increased expression of Na+/K+-ATPase on the basolateral membrane of the distal segments Increased expression of ENAC on the apical membrane of the distal segments Increased expression of aquaporin 2 on the apical membrane of collecting duct cells Increased expression of aquaporin 3 on the basolateral membrane of collecting duct cellsarrow_forward
- A uremic patient has a urine output of 1.8 L/24 h and an average creatinine concentration of 2.2 mg/dL. What is the creatinine clearance? How would you adjust the dose of a drug normally given at 20 mg/kg every 6 hours in this patient (assume the urine creatinine concentration is 0.1 mg/mL and creatinine clearance is 100 mL/min)?arrow_forwardExplain how an angiotensin converting enzyme inhibitor (ACE inhibitor) such as captopril would be effective as an antihypertensivearrow_forwardlease answer the following questions: Another patient has signs of glomerular capsule damage (damage to the filtration membrane) and now tests positive for proteins in her urine. What effect, if any, might this have on NFP and why? The same patient is showing signs of edema in her hands and feet (peripheral edema). What might be the explanation for this? What effect might the presence of a kidney stone have on NFP? Explain why?arrow_forward
- Why do women recieving oxytocin (to facilitate childbirth) become edematous? In the early days of oxytocin therapy, when this effect was not recognized, some women died of water intoxication. Explain.arrow_forwardOne type of diuretic given to people with high blood pressure, renal disease and congestive heart failure are thiazide-type diuretics. These drugs inhibit sodium ion reabsorption by inhibiting the transport in the ascending limb of the loop of Henle. A) What does it mean to inhibit the transport of sodium ions in the loop of Henle? B) Explain how this inhibition of sodium ions in the loop of Henle could help increase urine production.arrow_forwardBlood volume must be restored in a person who has lost large amounts of blood due to serious injury. This is often accomplished by infusing isotonic NaCl solution into the blood. Why is this more effective than infusing an isoosmotic solution of a penetrating solute, such as urea?arrow_forward
- An inadequate (low) dietary intake of NaCl will cause A) increased angiotensin II productionarrow_forwardThe Na+-glucose transporters SGLT2 and SGLT1 are located at different levels of the kidney proximal tubule to minimize spillover of the glucose into the urine (See diagram attached) a) Consider the Na+-glucose coupling ratios for SGLT2 and SGLT1. Why would localization of SGLT2 in the early proximal tubule and SGLT1 in the late proximal tubule be advantageous? b) The Michaelis constant (Km) for the SGLT2 and SGLT1 transporters are 2 mM and 0.5 mM, respectively. Is SGLT2 or SGLT1 the higher affinity Na+-glucose transporter? d) Dapagliflozin is an SGLT1 inhibitor and commonly prescribed to treat type 2 diabetes. Why would this be of benefit to a diabetes patient?arrow_forwardHow does moderate to severe COPD (chronic obstructive pulmonary disease) often lead to chronic respiratory acidosis? How might the kidneys compensate for this i.e explain at least 2 mechanisms which the kidney may use to do so - be sure to include hormones, cells involved. If the H+/K+ ATPase is brought into service, how would the plasma K+ concentration be affected? Lastly, how would activation of H+/K+ ATPase counteract or synergize with the actions of aldosterone?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license