Human Physiology: Fluid Gains and Losses

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Questions and Answers

What percentage of an adult's weight consists of fluid?

  • 70%
  • 50%
  • 60% (correct)
  • 40%

Which of the following is an example of interstitial fluid?

  • Cerebrospinal fluid
  • Intravascular fluid
  • Blood plasma
  • Lymph (correct)

What is the term for the loss of fluid from the body that disrupts the equilibrium between the interstitial and intravascular spaces?

  • Third-space fluid shift (correct)
  • Fluid loss syndrome
  • Intravascular shift
  • Interstitial shift

What is the primary function of the homeostatic mechanisms involved in fluid and electrolyte balance?

<p>To maintain a constant internal equilibrium (C)</p> Signup and view all the answers

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

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

Which of the following is a factor that influences the amount of body fluid?

<p>All of the above (D)</p> Signup and view all the answers

What is the term for the compartment of extracellular fluid that contains fluid within the blood vessels?

<p>Intravascular space (D)</p> Signup and view all the answers

Which of the following conditions can cause a third-space fluid shift?

<p>All of the above (D)</p> Signup and view all the answers

What is the average daily urine output for a healthy adult?

<p>1 to 2 L (C)</p> Signup and view all the answers

What is the normal rate of water vapor elimination through the lungs in a healthy adult?

<p>300 mL/day (D)</p> Signup and view all the answers

What is the usual daily fluid loss through the gastrointestinal tract?

<p>100 to 200 mL (B)</p> Signup and view all the answers

Which organ's thirst center controls the oral intake of fluids?

<p>Hypothalamus (C)</p> Signup and view all the answers

Through which method does the skin lose approximately 600 mL of water daily?

<p>Insensible water loss (C)</p> Signup and view all the answers

Which mechanism specifically increases water loss through the skin?

<p>Fever and major burns (B)</p> Signup and view all the answers

Which body system contributes to maintaining the composition and volume of body fluid within narrow limits of normal?

<p>Homeostatic mechanisms (A)</p> Signup and view all the answers

What is a consequence of long-term hyperpnea?

<p>Increased water vapor elimination (D)</p> Signup and view all the answers

What condition occurs when the loss of extracellular fluid (ECF) volume exceeds the intake of fluid?

<p>Hypovolemia (C)</p> Signup and view all the answers

Which of the following is NOT a cause of fluid volume deficit (FVD)?

<p>High fluid intake (A)</p> Signup and view all the answers

Which hormone is released by the heart to help regulate water and electrolyte balance?

<p>Atrial natriuretic peptide (ANP) (C)</p> Signup and view all the answers

What is the main function of the lungs in maintaining homeostasis?

<p>Maintaining acid-base balance (A)</p> Signup and view all the answers

Which of the following is a clinical manifestation of fluid volume deficit (FVD)?

<p>Orthostatic hypotension (B)</p> Signup and view all the answers

What happens when fluid moves from the vascular system to other body spaces?

<p>Formation of edema (B)</p> Signup and view all the answers

Which physiological process allows the kidneys to form urine?

<p>Pumping action of the heart (D)</p> Signup and view all the answers

Which depends on sufficient renal perfusion to regulate water and electrolytes?

<p>Renal function (B)</p> Signup and view all the answers

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