Fluid and Electrolyte Balance in the Human
Body questions and verified answers (
detailed & elaborated) ACTUAL EXAM
2026 TEST!!
Total Body Water (TBW) - CORRECT ANSWERS Water constitutes 60% of adult body weight.
Intracellular Fluid - CORRECT ANSWERS Fluid located within cells, majority of body fluid.
Extracellular Fluid - CORRECT ANSWERS Fluid found outside cells, includes interstitial fluid.
Transcellular Fluid - CORRECT ANSWERS Includes cerebrospinal, synovial, and pericardial
fluids.
Interstitial Fluid - CORRECT ANSWERS Approximately 25% of total body fluid.
Intravascular Fluid - CORRECT ANSWERS Blood plasma, accounts for 8% of body fluid.
Osmolarity - CORRECT ANSWERS Concentration of osmols per liter of solvent.
Isotonic Solution - CORRECT ANSWERS 0.9% sodium chloride, maintains cell volume.
Hypertonic Solution - CORRECT ANSWERS Causes cellular shrinkage by pulling water out.
Hypotonic Solution - CORRECT ANSWERS Excess water enters cells, causing swelling.
, Hydrostatic Pressure - CORRECT ANSWERS Fluid force against blood vessel walls.
Renin-Angiotensin System - CORRECT ANSWERS Regulates blood pressure and fluid balance.
Antidiuretic Hormone (ADH) - CORRECT ANSWERS Controls water excretion to maintain
serum osmolality.
Hypovolemia - CORRECT ANSWERS Decreased blood volume leading to low blood pressure.
Atrial Natriuretic Peptide (ANP) - CORRECT ANSWERS Secreted in response to increased
blood volume.
Diffusion - CORRECT ANSWERS Movement of solutes from high to low concentration.
Active Transport - CORRECT ANSWERS Solute movement from low to high concentration.
Acid-Base Balance - CORRECT ANSWERS Maintains pH through hydrogen ion concentration.
Acid - CORRECT ANSWERS Chemical that releases hydrogen ions in solution.
Base - CORRECT ANSWERS Substance that accepts hydrogen ions.
Fluid Volume Deficit - CORRECT ANSWERS Loss of body fluids leading to dehydration.
Signs of Dehydration - CORRECT ANSWERS Includes dizziness, confusion, and dry skin.
Body questions and verified answers (
detailed & elaborated) ACTUAL EXAM
2026 TEST!!
Total Body Water (TBW) - CORRECT ANSWERS Water constitutes 60% of adult body weight.
Intracellular Fluid - CORRECT ANSWERS Fluid located within cells, majority of body fluid.
Extracellular Fluid - CORRECT ANSWERS Fluid found outside cells, includes interstitial fluid.
Transcellular Fluid - CORRECT ANSWERS Includes cerebrospinal, synovial, and pericardial
fluids.
Interstitial Fluid - CORRECT ANSWERS Approximately 25% of total body fluid.
Intravascular Fluid - CORRECT ANSWERS Blood plasma, accounts for 8% of body fluid.
Osmolarity - CORRECT ANSWERS Concentration of osmols per liter of solvent.
Isotonic Solution - CORRECT ANSWERS 0.9% sodium chloride, maintains cell volume.
Hypertonic Solution - CORRECT ANSWERS Causes cellular shrinkage by pulling water out.
Hypotonic Solution - CORRECT ANSWERS Excess water enters cells, causing swelling.
, Hydrostatic Pressure - CORRECT ANSWERS Fluid force against blood vessel walls.
Renin-Angiotensin System - CORRECT ANSWERS Regulates blood pressure and fluid balance.
Antidiuretic Hormone (ADH) - CORRECT ANSWERS Controls water excretion to maintain
serum osmolality.
Hypovolemia - CORRECT ANSWERS Decreased blood volume leading to low blood pressure.
Atrial Natriuretic Peptide (ANP) - CORRECT ANSWERS Secreted in response to increased
blood volume.
Diffusion - CORRECT ANSWERS Movement of solutes from high to low concentration.
Active Transport - CORRECT ANSWERS Solute movement from low to high concentration.
Acid-Base Balance - CORRECT ANSWERS Maintains pH through hydrogen ion concentration.
Acid - CORRECT ANSWERS Chemical that releases hydrogen ions in solution.
Base - CORRECT ANSWERS Substance that accepts hydrogen ions.
Fluid Volume Deficit - CORRECT ANSWERS Loss of body fluids leading to dehydration.
Signs of Dehydration - CORRECT ANSWERS Includes dizziness, confusion, and dry skin.
