BIOLOGY 12TH ED (LL) W/ CONNECT
12th Edition
ISBN: 9781264898091
Author: Raven
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 49, Problem 2S
John’s doctor is concerned that John’s kidneys may not be functioning properly due to a circulatory condition. The doctor wants to determine if the blood volume flowing through the kidneys (called renal blood flow rate) is within normal range. Calculate what would be a “normal” renal blood flow rate based on the following information:
John weighs 90 kg. Assume a normal total blood volume is 80 mL/kg of body weight, and a normal heart pumps the total blood volume through the heart once per minute (cardiac output). Also assume that the normal renal blood flow rate is 21% of cardiac output.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Given the following pressures on the venous end of a capillary, calculate the NET pressure and determine if this pressure is in favor of filtration or reabsorption.
Blood pressure: 15 mmHg
Hydrostatic pressure in the tissues: -3 mmHg
Colloid Osmotic Pressure in a capillary: 28 mmHg
Colloid Osmotic Pressure in tissue: 8 mmHg
You are designing the arterial blood vessels that go to the kidney. The first part of
kidney function involves a filtration mechanism that filters blood. To maximize this
filtration mechanism, you want to maximize blood flow to the kidney. Using Poiseuille’s
Law (on page 1), explain how you would construct the arterial circuit so that blood flow
is maximized. Assume that blood viscosity (h) will not be changed.
Given the following values, calculate the fluid movement between capillaries and tissues:
hydrostatic pressure of the capillary = 25 mm Hg
hydrostatic pressure of the interstitial fluid = 5 mm Hg
colloid osmotic pressure of the capillary = 15 mm Hg
colloid osmotic pressure of the interstitial fluid = 5 mm Hg
Group of answer choices
30 mm Hg into the capillary
30 mm Hg out of the capillary
10 mm Hg into the capillary
10 mm Hg out of the capillary
Chapter 49 Solutions
BIOLOGY 12TH ED (LL) W/ CONNECT
Ch. 49.1 - Prob. 1LOCh. 49.1 - Prob. 2LOCh. 49.2 - Identify the relative toxicity and solubility of...Ch. 49.3 - Prob. 1LOCh. 49.3 - Define reabsorption and secretion.Ch. 49.4 - Prob. 1LOCh. 49.4 - Explain the role of the loop of Henle in the...Ch. 49.5 - Prob. 1LOCh. 49.5 - Prob. 2LOCh. 49.5 - Prob. 3LO
Ch. 49.6 - Prob. 1LOCh. 49.6 - Prob. 2LOCh. 49 - Prob. 1DACh. 49 - Which of the following is NOT an ion...Ch. 49 - Prob. 2UCh. 49 - A sharks blood is isotonic to the surrounding...Ch. 49 - An important function of the excretory system is...Ch. 49 - Which of the following is a function of the...Ch. 49 - Humans excrete their excess nitrogenous wastes as...Ch. 49 - An osmoregulator would maintain its internal...Ch. 49 - Prob. 1ACh. 49 - A viral infection that specifically interferes...Ch. 49 - Diuretics are drugs that can be used to treat high...Ch. 49 - Caffeine inhibits the secretion of ADH. Prior to...Ch. 49 - You and your study partner want to draw the...Ch. 49 - You are studying renal function in different...Ch. 49 - Prob. 1SCh. 49 - Johns doctor is concerned that Johns kidneys may...
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
- Hydrostatic pressure inside the capillary = 34 mmHgColloid osmotic pressure of the blood plasma = 27 mmHgHydrostatic pressure in the interstitial fluid = 2 mmHgColloid osmotic pressure in the interstitial fluid = 4 mmHgWhat is the total pressure favoring filtration?What is the total pressure favoring absorption?What is the net effect of these forces on fluid movement across the wall of the capillary?arrow_forwardCapillary filtration plays a vital role in the exchange of fluids between the circulatory system and tissues A. Consider a scenario where the hydrostatic pressure in the capillary bed is 40 mmHg, the osmotic pressure in the capillary is 25 mmHg, and the interstitial fluid hydrostatic pressure is 5 mmHg. Calculate the net filtration pressure in this situation. B. Determine the direction of fluid movement across the capillary wallarrow_forwardA healthy 48-year-old man comes to the physician with his wife for a routine examination. When asked about his diet, the patient says, "I eat health foods as long as they taste good." His wife says that her husband heavily salts all the food he eats. Under normal circumstances, which of the following responses most likely allows the patient to compensate for the excess dietary sodium? Serum concentrations: Aldostrone angiotensin II plasma renin activity a. increased increased increased b. increased increased decreased c. increased decreased increased d. increased decreased decreased e. decreased decreased decreasedarrow_forward
- Hypertension is a major health issue in the United States, yet glomerular filtration rate is not autoregulated until mean arterial blood pressure exceeds 180 mm Hg. In contrast, a drop in mean arterial blood pressure of only a few mm Hg sets autoregulation into motion. What does this tell you about the regulation of blood pressure?arrow_forwardSeverely malnourished individuals, depleted of proteins and other solutes in their plasma, experience extreme edema which can result in the appearance of distended abdomens. The following is a graph of the typical blood and osmotic pressures in the capillaries of a healthy, well-nourished individual. A. Which graph (A-D) most closely resembles how the pressures might change in a malnourished person to result in the initial appearance of edema. B. Briefly explain how this pressure change results in edema.arrow_forwardThe long-term regulation of arterial blood pressure is controlled by the Renin-Angiotensin-Aldosterone system (RAA system). Explain how the activation of the RAA system is initiated.arrow_forward
- Answer the question in 140 wordsarrow_forwardWhat would the net filtration pressure (NFP) be at a point in the capillary with the following capillary and interstitial fluid values?BHP = 25 mmHg, IFHP = -1 mmHg, BCOP = 26 mmHg, IFCOP = 4 mmHg A. 4 mmHg out of the capillaryB. 4 mmHg into the capillaryC. 2 mmHg out of the capillaryD. 2 mmHg in to the capillaryarrow_forwardAs blood flows from the aorta to the arteries, arterioles, and capillaries and through the venous circulation, it encounters various resistances to flow, which results in pressure drops. Using the table, calculate the resistance for an artery and a capillary. (Note: The viscosity of the blood is 3.5 × 10-3 Pa-s.)arrow_forward
- Why do people with hypertension keep a low-salt (low- sodium) diet? Explain further.arrow_forwardName a mechanism other than chemical factors that contributes toflow autoregulation?arrow_forwardThe order reads Potassium Chloride drip: 40 meqs KCl in 500 mL in NSS IV @ 7 meqs/hr. Compute for infusion rate in ml/minarrow_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
Excretory System; Author: Amoeba Sisters;https://www.youtube.com/watch?v=q5qaGHfdmYM;License: Standard youtube license