Nutrition: Concepts and Controversies
14th Edition
ISBN: 9781305886865
Author: Sizer, Frances , WHITNEY, Ellie
Publisher: Cengage Learning
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Chapter 8, Problem 6SC
Summary Introduction
Introduction:
Water balance in our body is maintained by the kidneys or by the brain. Both of these contain specialized osmoreceptors that detect any change in plasma osmolarity. Kidneys play a crucial role in drawing extra water from the body through the process of osmosis. Osmosis is regulated by levels of sodium and potassium in the blood and any altercation in these levels will either increase or decrease the blood pressure.
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Mark the following statements as true or false. If a statement is false, correct it to make a true statement. a. The thirst mechanism is mediated by osmoreceptors located in the cerebral cortex. b. The sensible water loss includes the water lost from the body via the skin and the respiratory system. c. The main hormone that regulates fluid balance is antidiuretic hormone (ADH). d. Atrial natriuretic peptide promotes water retention in the kidneys and increases the amount of water in the body. e. Dehydration is characterized by a decreased volume and increased osmolarity of the ECF
In a healthy person, which substance(s) should NOT be found in urine in high levels? Choose all that apply.
a. Urea
b. Simple sugars
c. Proteins
d. Blood cells
e. Amino acids
f. Electrolytes such as salts
Which of the following is a function of the kidneys?
a. The kidneys remove harmful substances from the body.
b. The kidneys recapture water for use by the body.
c. The kidneys regulate the levels of salt in the blood.
d. All of the choices are correct.
Chapter 8 Solutions
Nutrition: Concepts and Controversies
Ch. 8 - Prob. 1RQCh. 8 - Prob. 2RQCh. 8 - Prob. 3RQCh. 8 - Prob. 1CTCh. 8 - Prob. 2CTCh. 8 - Prob. 1SCCh. 8 - Prob. 2SCCh. 8 - Water from public water systems requires frequent...Ch. 8 - Prob. 4SCCh. 8 - Prob. 5SC
Ch. 8 - Prob. 6SCCh. 8 - Vomiting or diarrhea causes fluid to be pulled...Ch. 8 - Which two minerals are the major constituents of...Ch. 8 - Prob. 9SCCh. 8 - Prob. 10SCCh. 8 - Prob. 11SCCh. 8 - The top food sources of zinc include a. grapes. b....Ch. 8 - Prob. 13SCCh. 8 - Which of these mineral supplements can easily...Ch. 8 - Prob. 15SCCh. 8 - Prob. 16SCCh. 8 - Prob. 17SCCh. 8 - Prob. 18SCCh. 8 - Prob. 19SCCh. 8 - Too little in the diet is associated with...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, health-nutrition and related others by exploring similar questions and additional content below.Similar questions
- The body loses water by way of the ________. a. skin b. lungs c. digestive system d. urinary system e. both c and d f. a through darrow_forwardWhen a substance is reabsorbed in the kidney that substance is: A. Removed from the blood and put into the renal tubule B. Removed from the renal tubule and put into the blood C. Removed from the body via urine. D. Both B & Carrow_forwardExtracellular fluids have relatively? A. high sodium and low potassium levels. B .high sodium and high potassium levels. C. higher concentrations of potassium, magnesium, phosphate, and D. sulfate ions. E. low sodium and low potassium levels. F. low sodium and high potassium levels.arrow_forward
- The presence of ADH (antidiuretic hormone) causes an individualto excretea. sugars.b. less water.c. more water.d. Both a and c are correctarrow_forwarda patient with diabetes has been diagnosed with metabolic acidosis. identify the mechanisms by which the body will adapt, CHECK ALL THAT APPLY a. reabsorption of H ions from proximal convoluted tubule b. increased respiratory rate c. decreased filtration of HCO3 in glomerular capsule d. reabsorption of filtered HCO3 from the proximal convoluted tubule e. secretion of H ions by the intercalated cellsarrow_forwardLean individuals have a higher percentage of body water than obese individuals. A. True B. Falsearrow_forward
- Diuretics cause sodium excretion. Sodium follows water. Therefore, diuretics lead to a reduction in volume (remember BP = heart rate x volume x blood vessel tone (SVR)). Since diuretics lower volume, they lower BP. When would diuretics be indicated? When would they be contraindicated?arrow_forwardDiabetes insipidus:* a. Hypernatremia due to decreased water intake b. Hypernatremia due to excess water loss c. Hyponatremia due to increased sodium loss d. Hyponatremia due to increased water retentionarrow_forwardWhich of the following is TRUE concerning renal handling of potassium? a. A high potassium meal will cause enhanced basolateral uptake via sodium-potassium pumps b. Most potassium reabsorption occurs at the distal tubules c. Aldosterone enhances potassium reabsorption at the proximal tubule d. Potassium is not filtered, so urinary excretion of potassium will only occur by stimulating potassium secretion e. Decreased extracellular potassium concentration increases aldosterone production and thereby reduces potassium secretionarrow_forward
- High levels of bicarbonate ions in the urine indicatea. a low level of H+ secretion into the urine.b. that the kidneys are causing blood pH to increase.c. that urine pH is decreasing.d. All of these are correct.arrow_forwardWhich of the following statements are true? Multiple Choice. Signs of dehydration in older adults include weakness, constipation, and mental confusion. All of these choices are correct. The body's water content decreases with advancing age. Risk of urinary incontinence increases as a person ages.arrow_forwardThe renal system responds to alkalosis by A. Increased secretion of hydrogen ions (H+) B. Decreased secretion of hydrogen ions (H+) C. Increased secretion of Sodium (Na+) D. Decreased secretion of Sodium (Na+)arrow_forward
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