BIO 669 fluids & electrolytes UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Water makes up approximately __% of lean body weight in men and __% body weight in
women - CORRECT ANSWER - 60% men, 50% women
/ of water is in the cells (intracellular) and / is extracellular which can be further subdivided into
ECF: __% intravascular and __%interstitial - CORRECT ANSWER - 2/3 water-
intracellular, 1/3 water-extracellular, ECF 25% intravascular 75% interstitial
BC most water is in the cells, ________ changes are generally associated with change in serum
osmolality and electrolyte concentrations. - CORRECT ANSWER - volume
60-40-20 rule - CORRECT ANSWER - 60% of body weight is water
40% of body weight is ICF
20% of body weight is ECF
Of the ECF, _/_ is interstitial fluid and _/__is intravascular fluid - CORRECT ANSWER -
3/4 interstitial fluid, 1/4 intravascular fluid
A 100kg man has ___kg of plasma - CORRECT ANSWER - 5kg
In kids, __% to __% of body weight is water - CORRECT ANSWER - 75-80%
Children are extremely susceptible to ______ and significant changes in body fluid. Infants can
lose fluid quickly d/t ______ or __________. - CORRECT ANSWER - dehydration, fever,
respirations
,Elderly are at higher risk for __________ d/t their decreased ________ ______, ______ _______
_____, _______ decline, and diminished ______ perception - CORRECT ANSWER -
higher risk for dehydration d/t decreased free fat mass, decreased muscle mass, renal decline,
diminished thirst perception
Elderly have decreased percent of total - CORRECT ANSWER - body water
Ability to attract water forces, sodium, or potassium, drawing water toward it - CORRECT
ANSWER - osmotic forces
allows movement of water across membranes, not as easy for ions to move compared to water -
CORRECT ANSWER - aquaporins
forces affecting movement of fluid between cells/spaces - CORRECT ANSWER - Starling
forces
forces favoring filtration minus forces opposing filtration - CORRECT ANSWER - Net
filtration
concentration of osmotic active particles in a solution - CORRECT ANSWER - osmolarity
Van't Hoff's Law - CORRECT ANSWER - osmotic potential is negative and proportional
to the concentration of solute particles
A solution saltier than inside the cell would be considered _________ - CORRECT
ANSWER - hypertonic
A solution less salty/ less osmotic would be considered - CORRECT ANSWER -
hypotonic
, This tonicity (hypo or hyper tonic) will affect the movement of water which can cross the plasma
membrane. It will move from a _____________ concentration of water to _______ concentration
of water. - CORRECT ANSWER - high to low water concentration
_____, ___________, ___________ ________ create hydrostatic pressure - CORRECT
ANSWER - RBCs, albumin, globulin proteins
__________ __________ pressure is the pressure created by protein (inside the blood) -
CORRECT ANSWER - Colloid osmotic pressure
As hydrostatic or oncotic pressures change, ______ will shift. - CORRECT ANSWER -
fluid
_______ pressure within the capillaries is mostly unopposed. - CORRECT ANSWER -
Hydrostatic pressure within the capillaries is mostly unopposed.
Net __________ pressure will be to pull fluid into the capillaries - CORRECT ANSWER -
Net osmotic pressure
On the artery side, the net fluid movement is into the ____________. - CORRECT
ANSWER - interstitial fluid
On the venous side, the net movement of fluid is into the _____________. - CORRECT
ANSWER - capillaries
The ____________ helps to pick up the extra fluid not reabsorbed by the capillaries on the
venous side - CORRECT ANSWER - lymphatic system
Blockage of lymphatic vessels leads to - CORRECT ANSWER - increased edema (it also
functions to help return proteins back to heart and vasculature
ACTUAL Exam Questions and CORRECT
Answers
Water makes up approximately __% of lean body weight in men and __% body weight in
women - CORRECT ANSWER - 60% men, 50% women
/ of water is in the cells (intracellular) and / is extracellular which can be further subdivided into
ECF: __% intravascular and __%interstitial - CORRECT ANSWER - 2/3 water-
intracellular, 1/3 water-extracellular, ECF 25% intravascular 75% interstitial
BC most water is in the cells, ________ changes are generally associated with change in serum
osmolality and electrolyte concentrations. - CORRECT ANSWER - volume
60-40-20 rule - CORRECT ANSWER - 60% of body weight is water
40% of body weight is ICF
20% of body weight is ECF
Of the ECF, _/_ is interstitial fluid and _/__is intravascular fluid - CORRECT ANSWER -
3/4 interstitial fluid, 1/4 intravascular fluid
A 100kg man has ___kg of plasma - CORRECT ANSWER - 5kg
In kids, __% to __% of body weight is water - CORRECT ANSWER - 75-80%
Children are extremely susceptible to ______ and significant changes in body fluid. Infants can
lose fluid quickly d/t ______ or __________. - CORRECT ANSWER - dehydration, fever,
respirations
,Elderly are at higher risk for __________ d/t their decreased ________ ______, ______ _______
_____, _______ decline, and diminished ______ perception - CORRECT ANSWER -
higher risk for dehydration d/t decreased free fat mass, decreased muscle mass, renal decline,
diminished thirst perception
Elderly have decreased percent of total - CORRECT ANSWER - body water
Ability to attract water forces, sodium, or potassium, drawing water toward it - CORRECT
ANSWER - osmotic forces
allows movement of water across membranes, not as easy for ions to move compared to water -
CORRECT ANSWER - aquaporins
forces affecting movement of fluid between cells/spaces - CORRECT ANSWER - Starling
forces
forces favoring filtration minus forces opposing filtration - CORRECT ANSWER - Net
filtration
concentration of osmotic active particles in a solution - CORRECT ANSWER - osmolarity
Van't Hoff's Law - CORRECT ANSWER - osmotic potential is negative and proportional
to the concentration of solute particles
A solution saltier than inside the cell would be considered _________ - CORRECT
ANSWER - hypertonic
A solution less salty/ less osmotic would be considered - CORRECT ANSWER -
hypotonic
, This tonicity (hypo or hyper tonic) will affect the movement of water which can cross the plasma
membrane. It will move from a _____________ concentration of water to _______ concentration
of water. - CORRECT ANSWER - high to low water concentration
_____, ___________, ___________ ________ create hydrostatic pressure - CORRECT
ANSWER - RBCs, albumin, globulin proteins
__________ __________ pressure is the pressure created by protein (inside the blood) -
CORRECT ANSWER - Colloid osmotic pressure
As hydrostatic or oncotic pressures change, ______ will shift. - CORRECT ANSWER -
fluid
_______ pressure within the capillaries is mostly unopposed. - CORRECT ANSWER -
Hydrostatic pressure within the capillaries is mostly unopposed.
Net __________ pressure will be to pull fluid into the capillaries - CORRECT ANSWER -
Net osmotic pressure
On the artery side, the net fluid movement is into the ____________. - CORRECT
ANSWER - interstitial fluid
On the venous side, the net movement of fluid is into the _____________. - CORRECT
ANSWER - capillaries
The ____________ helps to pick up the extra fluid not reabsorbed by the capillaries on the
venous side - CORRECT ANSWER - lymphatic system
Blockage of lymphatic vessels leads to - CORRECT ANSWER - increased edema (it also
functions to help return proteins back to heart and vasculature
