BIO 669 EXAM 2025 QUESTIONS AND
ANSWERS
Water makes up ____% in men - ANS 60%
water makes up ____% in women - ANS 50%
made up of 2/3 (40%) of water - ANS intracellular
made up of 1/3 (20%) of water - ANS extracellular
what two things make up extracellular fluid? - ANS Intravascular and interstitial
what % of intravascular is in the extracellular? - ANS 25%
what % of interstitial is in the extracellular? - ANS 75%
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,who has more water, men or women? - ANS men
who has more water, elderly or pediatric? - ANS pediatric
why does total body water decrease as we age? - ANS decreased free fat and muscle mass
renal decline
diminished thirst perception
Starling forces - ANS forces affecting movement of fluid between cells and spaces
net filtration - ANS forces favoring filtration minus forces opposing filtration
Osmolarity - ANS concentration of osmotically active particles in a solution
isosmotic - ANS solutions with the same concentrations of solute particles (osmolarity)
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,hyposomotic - ANS solution with lower osmotic pressure. lower outside
hyperosmotic - ANS solution with higher osmolarity. higher inside.
isotonic - ANS two solutions with the same osmotic pressure
Hypotonic - ANS when comparing two solutions, the solution with the lesser concentration
of solutes within the cell
Hypertonic - ANS when comparing two solutions, the solution with the greater concentration
of solutes within the cell
Forces favoring filtration - ANS Capillary hydrostatic pressure (blood pressure) and interstitial
oncotic pressure (water-pulling)
Forces favoring reabsorption - ANS Plasma (capillary) oncotic pressure (water-pulling)
Interstitial hydrostatic pressure
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, edema - ANS accumulation of fluid within the interstitial spaces
causes of edema - ANS increased capillary hydrostatic pressure (increased BP),
decrease of plasma oncotic pressure,
obstruction of lymphatic circulation,
increased capillary permeability
What is ascites? - ANS accumulation of fluid in the peritoneal cavity
example of increased capillary hydrostatic pressure - ANS venous obstruction, salt and water
retention, heart failure, renal failure
what does increased capillary hydrostatic pressure cause? - ANS forces fluid into tissues
causes of decreased capillary (plasma) oncotic pressure - ANS decreased plasma albumin
-decreased synthesis of plasma proteins (cirrhosis, malnutrition)
-increased loss of plasma proteins (nephrotic syndrome)
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ANSWERS
Water makes up ____% in men - ANS 60%
water makes up ____% in women - ANS 50%
made up of 2/3 (40%) of water - ANS intracellular
made up of 1/3 (20%) of water - ANS extracellular
what two things make up extracellular fluid? - ANS Intravascular and interstitial
what % of intravascular is in the extracellular? - ANS 25%
what % of interstitial is in the extracellular? - ANS 75%
1 Copyright ©2025 FYNDLAY ALL RIGHTS RESERVED.
,who has more water, men or women? - ANS men
who has more water, elderly or pediatric? - ANS pediatric
why does total body water decrease as we age? - ANS decreased free fat and muscle mass
renal decline
diminished thirst perception
Starling forces - ANS forces affecting movement of fluid between cells and spaces
net filtration - ANS forces favoring filtration minus forces opposing filtration
Osmolarity - ANS concentration of osmotically active particles in a solution
isosmotic - ANS solutions with the same concentrations of solute particles (osmolarity)
2 Copyright ©2025 FYNDLAY ALL RIGHTS RESERVED.
,hyposomotic - ANS solution with lower osmotic pressure. lower outside
hyperosmotic - ANS solution with higher osmolarity. higher inside.
isotonic - ANS two solutions with the same osmotic pressure
Hypotonic - ANS when comparing two solutions, the solution with the lesser concentration
of solutes within the cell
Hypertonic - ANS when comparing two solutions, the solution with the greater concentration
of solutes within the cell
Forces favoring filtration - ANS Capillary hydrostatic pressure (blood pressure) and interstitial
oncotic pressure (water-pulling)
Forces favoring reabsorption - ANS Plasma (capillary) oncotic pressure (water-pulling)
Interstitial hydrostatic pressure
3 Copyright ©2025 FYNDLAY ALL RIGHTS RESERVED.
, edema - ANS accumulation of fluid within the interstitial spaces
causes of edema - ANS increased capillary hydrostatic pressure (increased BP),
decrease of plasma oncotic pressure,
obstruction of lymphatic circulation,
increased capillary permeability
What is ascites? - ANS accumulation of fluid in the peritoneal cavity
example of increased capillary hydrostatic pressure - ANS venous obstruction, salt and water
retention, heart failure, renal failure
what does increased capillary hydrostatic pressure cause? - ANS forces fluid into tissues
causes of decreased capillary (plasma) oncotic pressure - ANS decreased plasma albumin
-decreased synthesis of plasma proteins (cirrhosis, malnutrition)
-increased loss of plasma proteins (nephrotic syndrome)
4 Copyright ©2025 FYNDLAY ALL RIGHTS RESERVED.
