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Bio 669 Quiz 1 With Complete Solution
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Bio 669 Quiz 1 With Complete Solutionwater makes up ____% in men - ANSWER 60%
water makes up ____% in women - ANSWER 50%
made up of 2/3 (40%) of water - ANSWER intracellular
made up of 1/3 (20%) of water - ANSWER extracellular
what two things make up extracellular fluid? - ANSWER Intravascular and interstitial
what % of intravascular is in the extracellular? - ANSWER 25%
what % of interstitial is in the extracellular? - ANSWER 75%
who has more water, men or women? - ANSWER men
who has more water, elderly or pediatric? - ANSWER pediatric
why does total body water decrease as we age? - ANSWER decreased free fat and
muscle mass
renal decline
diminished thirst perception
Starling forces - ANSWER forces affecting movement of fluid between cells and spaces
,net filtration - ANSWER forces favoring filtration minus forces opposing filtration
Osmolarity - ANSWER concentration of osmotically active particles in a solution
isosmotic - ANSWER solutions with the same concentrations of solute particles
(osmolarity)
hyposomotic - ANSWER solution with lower osmotic pressure. lower outside
hyperosmotic - ANSWER solution with higher osmolarity. higher inside.
isotonic - ANSWER two solutions with the same osmotic pressure
Hypotonic - ANSWER when comparing two solutions, the solution with the lesser
concentration of solutes within the cell
Hypertonic - ANSWER when comparing two solutions, the solution with the greater
concentration of solutes within the cell
Forces favoring filtration - ANSWER Capillary hydrostatic pressure (blood pressure) and
interstitial oncotic pressure (water-pulling)
Forces favoring reabsorption - ANSWER Plasma (capillary) oncotic pressure
(water-pulling)
Interstitial hydrostatic pressure
edema - ANSWER accumulation of fluid within the interstitial spaces
, causes of edema - ANSWER increased capillary hydrostatic pressure (increased BP),
decrease of plasma oncotic pressure,
obstruction of lymphatic circulation,
Increased capillary permeability
ascites - ANSWER accumulation of fluid in the peritoneal cavity
example of increase capillary hydrostatic pressure - ANSWER venous obstruction, salt
and water retention, heart failure, renal failure
What is increased capillary hydrostatic pressure does? - ANSWER force fluid into
tissues
causes of decreased capillary or plasma oncotic pressure - ANSWER decreased plasma
albumin
-decreased synthesis of plasma proteins (cirrhosis, malnutrition)
- plasma protein loss is enhanced (nephrotic syndrome)
Na+ and H2O retention enhanced (dilution of plasma proteins)
what happens with lymph obstruction? - ANSWER fluid leakage into the tissues
transport of capillary filtered protein is reduced (hence increasing the tissue oncotic
pressure)
what are some examples of increased capillary permeability? - ANSWER burns and
inflammation
What is the effect of increased capillary permeability? - ANS proteins escape= loss of
plasma proteins to interstitial space (thus increasing tissue oncotic pressure and
decreased capillary oncotic pressure)
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