BIO 669 QUESTIONS AND ANSWERS LATEST UPDATE
(GRADED A+)
How much water makes up ICF?
2/3
How much water makes up ECF?
1/3
TBW of men?
60%
TBW of women?
50%
How much ICF makes up TBW?
2/3 is in the cell
How much ECF makes up TBW?
1/3 is out of the cell
What happens in pediatrics when fevers arise?
Increased loss of body fluid and dehydration
What happens to TBW with aging?
Decreased free fat mass
Decreased muscle mass
Renal decline
Diminished thirst perception
What is the net filtration in starling forces?
Forces favoring filtration minus forces opposing filtration
Hyperosmolarity
More particles outside of the cell
Hypoosmolarity
Less particles outside of the cell
What is the purpose of lymphatics?
, To help drain fluid left behind and return to the heart
What happens when lymphatics are blocked?
Edema may occur; increased proteins can pull more fluid in causing the edema to be pitting
What is the capillary hydrostatics pressure otherwise called?
Blood pressure
What is the interstitial oncotic pressure otherwise called?
Water-pulling
What are the net filtration forces that favor filtration?
Capillary hydrostatic pressure (BP) and interstitial oncotic pressure
What are the net filtration forces that favor reabsorption?
Plasma (capillary) oncotic pressure (water-pulling)
Interstitial hydrostatic pressure
What are the causes of edema?
Increased capillary hydrostatic pressure
Decrease plasma oncotic pressure
Increased capillary permeability
What can cause Papilledema?
ICP
What is the primary ECF cation?
Sodium (Na+)
What is the sodium level in the ECF?
142
What is the sodium level in the ICF?
12
What is the primary ECF anion?
Chloride (Cl-)
What is the chloride level in the ECF?
103
(GRADED A+)
How much water makes up ICF?
2/3
How much water makes up ECF?
1/3
TBW of men?
60%
TBW of women?
50%
How much ICF makes up TBW?
2/3 is in the cell
How much ECF makes up TBW?
1/3 is out of the cell
What happens in pediatrics when fevers arise?
Increased loss of body fluid and dehydration
What happens to TBW with aging?
Decreased free fat mass
Decreased muscle mass
Renal decline
Diminished thirst perception
What is the net filtration in starling forces?
Forces favoring filtration minus forces opposing filtration
Hyperosmolarity
More particles outside of the cell
Hypoosmolarity
Less particles outside of the cell
What is the purpose of lymphatics?
, To help drain fluid left behind and return to the heart
What happens when lymphatics are blocked?
Edema may occur; increased proteins can pull more fluid in causing the edema to be pitting
What is the capillary hydrostatics pressure otherwise called?
Blood pressure
What is the interstitial oncotic pressure otherwise called?
Water-pulling
What are the net filtration forces that favor filtration?
Capillary hydrostatic pressure (BP) and interstitial oncotic pressure
What are the net filtration forces that favor reabsorption?
Plasma (capillary) oncotic pressure (water-pulling)
Interstitial hydrostatic pressure
What are the causes of edema?
Increased capillary hydrostatic pressure
Decrease plasma oncotic pressure
Increased capillary permeability
What can cause Papilledema?
ICP
What is the primary ECF cation?
Sodium (Na+)
What is the sodium level in the ECF?
142
What is the sodium level in the ICF?
12
What is the primary ECF anion?
Chloride (Cl-)
What is the chloride level in the ECF?
103
