Water Balance and Loss in the Human Body
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Questions and Answers

What is the average daily intake of water by an adult?

  • 2.5 L (correct)
  • 4.5 L
  • 1.5 L
  • 3.5 L

    • What is the approximate amount of water lost through sweat daily?

  • 200 mL
  • 100 mL (correct)
  • 500 mL
  • 50 mL

    • Where does the majority of insensible water loss occur?

  • Lungs and skin (correct)
  • Lungs only
  • Kidneys and liver
  • Skin only

    • What is the effect of cold temperatures on insensible water loss through the lungs?

    <p>It increases</p> Signup and view all the answers

    What is the function of the cornified layer of the skin in terms of water loss?

    <p>It limits water loss</p> Signup and view all the answers

    What is the effect of burn injury on water loss through the skin?

    <p>It increases</p> Signup and view all the answers

    What percentage of total body water is found in men aged 41-60 years?

    <p>55</p> Signup and view all the answers

    What is the primary function of the interstitial fluid in the body?

    <p>To serve as a reservoir for water and electrolytes</p> Signup and view all the answers

    What is the estimated percentage of interstitial fluid held in the gel structure of the interstitial space?

    <p>99%</p> Signup and view all the answers

    What is the primary mechanism that minimizes loss of plasma volume from the intravascular space?

    <p>Colloid osmotic pressure</p> Signup and view all the answers

    What is a common manifestation of excess fluid in the interstitial space?

    <p>Peripheral edema</p> Signup and view all the answers

    What is the approximate volume of plasma in the average adult?

    <p>3 L</p> Signup and view all the answers

    What is the primary function of the renin-angiotensin system in maintaining intravascular fluid volume?

    <p>Increase fluid resorption in the kidney</p> Signup and view all the answers

    What is the approximate blood volume of an adult in liters?

    <p>5 L</p> Signup and view all the answers

    What is the relationship between blood volume and body weight in non-obese individuals?

    <p>Directly proportional</p> Signup and view all the answers

    What is the approximate percentage of potassium ions that are intracellular?

    <p>90%</p> Signup and view all the answers

    What is the main difference in the composition of intracellular and extracellular fluid?

    <p>Protein content</p> Signup and view all the answers

    What is the normal hematocrit for menstruating women?

    <p>38%</p> Signup and view all the answers

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