Modified Masteringa&p With Pearson Etext -- Standalone Access Card -- For Human Anatomy And Physiology
2nd Edition
ISBN: 9780134788074
Author: AMERMAN, Erin C.
Publisher: Pearson Education Canada
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Textbook Question
Chapter 24, Problem 9CYR
Which of the following is false about the GFR?
a. The GFR averages about 120 ml/min.
b. The GFR increases when the afferent arteriole dilates.
c. The GFR decreases when the efferent arteriole constricts.
d. The GFR decreases when the afferent arteriole constricts.
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Which of the following will decrease filtration at the glomerulus? ( check all that apply)
A. Low colloid osmotic pressure
B. Low capsular pressure
C. A relatively large diameter of theefferent arterioles compared to theafferent arteriole.
D. Increased number of podocytes at theglomerulus
When fluid flow through the ascending loop of Henle increases as a result of increased GFR, the macula densa cells send a chemical message to the neighboring afferent arteriole. The afferent arteriole constricts, increasing resistance and decreasing GFR. This type of autoregulation involving both the kidney tubule and the arteriole is known as ________.
myogenic tone
b.
macula densa cells
c.
countercurrent multiplication
d.
tubuloglomerular feedback
e.
juxtaglomerular feedback
Glomerular filtration can be increased by which of the following?
A. Increasing blood flow via afferent arteriole
B. Decreasing blood flow via afferent arteriole
C. Decreasing arterial blood pressure
D. Increasing blood flow via efferent arteriole
The answer is (A) Increasing blood flow via afferent arteriole. Please explain why it is not the other options (B,C,D)
Chapter 24 Solutions
Modified Masteringa&p With Pearson Etext -- Standalone Access Card -- For Human Anatomy And Physiology
Ch. 24.1 - What are the organs of the urinary system?Ch. 24.1 - 2. What are the basic functions of the kidneys?
Ch. 24.2 - Prob. 1QCCh. 24.2 - 2. What are the three regions of the kidney, and...Ch. 24.2 - Prob. 3QCCh. 24.2 - Trace the sequence of blood flow through the...Ch. 24.2 - Prob. 5QCCh. 24.2 - Prob. 6QCCh. 24.2 - Trace the pathway filtrate takes through the...Ch. 24.3 - Prob. 1QC
Ch. 24.3 - 2. How do tubular reabsorption and tubular...Ch. 24.4 - Prob. 1QCCh. 24.4 - Prob. 2QCCh. 24.4 - Prob. 3QCCh. 24.4 - 4. What is the GFR?
Ch. 24.4 - Prob. 5QCCh. 24.4 - Prob. 6QCCh. 24.4 - 7. How does tubuloglomerular feedback affect the...Ch. 24.4 - Prob. 8QCCh. 24.4 - Prob. 9QCCh. 24.4 - Prob. 10QCCh. 24.4 - How does the sympathetic nervous system affect the...Ch. 24.5 - Prob. 1QCCh. 24.5 - 2. What are the three types of transport...Ch. 24.5 - Prob. 3QCCh. 24.5 - What is obligatory water reabsorption?Ch. 24.5 - How do the permeabilities of the two limbs of the...Ch. 24.5 - Prob. 6QCCh. 24.5 - Prob. 7QCCh. 24.5 - Prob. 8QCCh. 24.6 - Prob. 1QCCh. 24.6 - Prob. 2QCCh. 24.6 - Prob. 3QCCh. 24.6 - Prob. 4QCCh. 24.6 - 5. What three factors allow the kidney to produce...Ch. 24.6 - 6. How is concentrated urine produced?
Ch. 24.8 - 1. What is the normal composition of urine?
Ch. 24.8 - Prob. 2QCCh. 24.8 - 3. What is renal clearance, and what is it used...Ch. 24.9 - Prob. 1QCCh. 24.9 - 2. What are the functions of the ureters and...Ch. 24.9 - Prob. 3QCCh. 24.9 - Prob. 4QCCh. 24.9 - Prob. 5QCCh. 24 - What are the four main organs of the urinary...Ch. 24 - 2. Which of the following is not a physiological...Ch. 24 - Mark the following statements as true or false. If...Ch. 24 - Prob. 4CYRCh. 24 - Prob. 5CYRCh. 24 - Which of the following substances would pass...Ch. 24 - Mark the following statements as true or false. If...Ch. 24 - Fill in the blanks for the following statements:...Ch. 24 - Which of the following is false about the GFR? a....Ch. 24 - The route by which substances are reabsorbed by...Ch. 24 - 11. Fill in the blanks: Glomerular hydrostatic...Ch. 24 - Dilute urine is produced when decreased levels of...Ch. 24 - Prob. 13CYRCh. 24 - Prob. 14CYRCh. 24 - Prob. 15CYRCh. 24 - 16. The GFR may be estimated by measuring the rate...Ch. 24 - Prob. 17CYRCh. 24 - Prob. 1CYUCh. 24 - Prob. 2CYUCh. 24 - Prob. 3CYUCh. 24 - Why must the kidneys establish a concentration...Ch. 24 - 1. Drugs that treat hypertension, or high blood...Ch. 24 - Prob. 2AYKACh. 24 - 3. Deana is a 4-year-old girl with a rare genetic...Ch. 24 - 4. Explain how each of the drugs in question 1...Ch. 24 - 5. What might it mean if you found a high...
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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
- Which one of the following statements is false?a. Blood pressure in the glomerular capillaries is greater than the osmotic pressure exerted by proteins in the plasma within the glomerular capillaries.b. If the osmotic pressure exerted by solutes in the peritubular capillaries is greater than the blood pressure in those capillaries, then water will be reabsorbed.c. Endothelial cells in glomerular capillaries are highly permeable, facilitating filtration of fluid into Bowman’s capsule.d. Constriction of the afferent arteriole is likely to reduce the volume of filtrate appearing in Bowman’s capsule.e. The efferent arteriole carries blood from the glomerular capillaries directly to the renal vein.0.5 pointsQuestion 2Your doctor calls with the results of your urinalysis and tells you that they found proteinuria, the presence of abnormal amounts of protein in your urine sample. What could have caused this?a. Infection and inflammation in the kidney.b. Abnormally high concentration of plasma…arrow_forwardWhich of the following describes why a very low GFR is not beneficial? a. Too many substances including wastes will be reabsorbed due to the reduced flow b. Filtered substances will pass by too quickly to be adequately reabsorbed c. There will be insufficient secretion of substances in the peritubular capillaries d. A low GFR is always beneficialarrow_forwardIf blood pressure increases by 50 mm Hga. the afferent arterioles constrict.b. glomerular capillary pressure increases by 50 mm Hg.c. GFR increases dramatically.d. efferent arterioles constrict.e. All of these are correct.arrow_forward
- The amount of plasma that enters the Bowman capsule per minute is the a. GFR. c. renal fraction. b. renal plasma flow. d. renal blood flowarrow_forwardWhich of the following is NOT a component of the glomerular filtration barrier? a. Endothelial cells b. Lamina Densa c. Lamina Reticularis d. Lamina Rara e. Podocytesarrow_forwardRenal plasma flow depends on the following: A. Afferent arteriole diameter B. Efferent arteriole diameter OC. Cardiac output D. Systemic pressure E. All of the abovearrow_forward
- Renin secreted by the juxtaglomerular cells in the afferent arteriole will lead to: A. Decreased plasma volume B. Decreased total body water C. Decreased water intake D. Decreased urine volume E. Decreased cardiac outputarrow_forwardDescribe the process of autoregulation of GFR and renal blood flow. a. Explain the importance of regulating GFR. b. What is the average GFR of a healthy adult in L/min. c. Describe what happens with GFR as blood pressure increases. d. How is GFR maintained constant despite increases in blood pressure and within which levels of blood pressure. i. Describe the tubuloglomerular feedback mechanism. ii. Describe the process of glomerular tubular balancearrow_forwardWhich of the following is TRUE about glucose reabsorption in the kidney? a.If an individual does not have diabetes mellitus, 100% of filtered glucose is reabsorbed at the proximal convoluted tubule. b.If an individual has diabetes mellitus, filtered glucose will be present in all the renal tubule. c.Glucose reabsorption along the proximal convoluted tubule uses the sodium glucose secondary active transporter and it is independent of insulin. d.All of the above e.None of the above asaparrow_forward
- Which of the following would reduce the glomerular filtration rate? Select one: a. Vasodilation of the afferent arteriole b. An increase in osmotic pressure in the Bowman capsule c. A drop in colloid osmotic pressure d. Vasoconstriction of the afferent arteriole e. Vasoconstriction of the efferent arteriolearrow_forwardAn increase in renal plasma flow without an increase in GFR will likely result in:a. Diuresisb. Antidiuresisc. Antinatriuresisd. No change of urine outputarrow_forwardGiven: The concentration of glucose in the blood is 1 mg/mL. This person then decides to go for a brisk run, which doubles GFR. a. What effect will this have on the amount of inulin and glucose present in their urine? Why? (answer a )arrow_forward
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