Human Anatomy & Physiology (2nd Edition)
2nd Edition
ISBN: 9780134553511
Author: Erin C. Amerman
Publisher: PEARSON
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Chapter 24.5, Problem 3QC
Summary Introduction
To review:
The substances that are reabsorbed from the proximal tubule and also comment upon those substances that are reabsorbed using the sodium ion gradient.
Introduction:
Cells of the proximal tubule consist of permanent microvilli that increase the surface area. They increase the process of reabsorption that occurs in this part of the renal tubule. Thus, during the process of reabsorption, the proximal tubule is the most active region as many different types of filtrates are reabsorbed in this section.
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Why are proteins said to be transported rather than simply reabsorbed in the proximal convoluted tubule?
how is glucose reabsorbed in the proximal tubule?
The process of hydrogen ion secretion in the proximal convoluted tubule occurs via which of the following mechanisms?
Choose from the following:
(A) hydrogen ions diffuse out of the glomerular filtrate of the proximal convoluted tubule, through extracellular fluid and into the peritubular blood
(B) carbon dioxide diffuses into the proximal convoluted tubule cell from peritubular capillary blood; undergoes a chemical reaction to form carbonic acid; dissociates into hydrogen and bicarbonate ions; the hydrogen ion diffuses into the glomerular filtrate of the proximal convoluted tubule
(C) hydrogen ions diffuse out of the peritubular capillary blood, through extracellular fluid and into the filtrate of the proximal convoluted tubule
(D) carbon dioxide diffuses into the proximal convoluted tubule cell from the glomerular filtrate; undergoes a chemical reacdtion to form carbonic acid; dissociates into hydrogen and bicarbonate ions; the hydrogen ions diffuse into the peritubular blood
Chapter 24 Solutions
Human Anatomy & Physiology (2nd Edition)
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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- Which of the following substances does NOT appear in normal filtrate within the distal convoluted tubule? Question options: A) Sodium ions C) Water D) Glucosearrow_forward1) What substances are reabsorbed from the tubules by active reabsorption and what substances by diffusion? 2) What substances are actively secreted by the tubules, and in what parts of the tubules are these substances secreted?arrow_forwardHow is glucose reabsorbed across the two membranes of the tubule cells?arrow_forward
- Select the best answer or answers from the choices given: Which is reabsorbed by the proximal convoluted tubule cells? (a) Na+, (b) K+, (c) amino acids, (d) all of the above.arrow_forwardExplain how epithelial cells of the proximal convoluted tubule are adapted for reabsorption.arrow_forwardWhat is the direction of movement of substances intubular reabsorption?arrow_forward
- How is the permeability of the distal convoluted tubule and the collecting tubule controlled for regulating the water content inside the body?arrow_forwardIndicate whether the following statements are true or false :(a) Micturition is carried out by a reflex.(b) ADH helps in water elimination, making the urine hypotonic.(c) Protein-free fluid is filtered from blood plasma into the Bowman’s capsule.(d) Henle’s loop plays an important role in concentrating the urine.(e) Glucose is actively reabsorbed in the proximal convoluted tubule.arrow_forwardFrom the previous question, In which section of the kidney tubules does this potassium movement occur? Is that movement passive or active?arrow_forward
- Define distal convoluted tubule.arrow_forwardExplain the mechanisms of Na+ reabsorption in the proximal, ascending limb and distal convoluted tubule. Explain the importance of the Na+/K+ ATPase pump in the process of Na+ and water reabsorptionarrow_forwardWhat is the basic flow of urine from the kidneys to being excreted?arrow_forward
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