NUR 8022 Exam 3 (2025) COMPREHENSIVE
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A&P HESI A2 PRACTICE TEST QUES... Physiology - Ch 15 Blood Flow Anatomy & Physiolo
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- increased adipose tissue
- decreased muscle mass
- renal decline
- diminished thirst
Choose matching term
Why do older adults experience a decrease
1 What is filtration? 2
in body percentage of water?
3 Cause of post-renal 4 What is interstitial oncotic pressure?
Don't know?
, Newborns; 75-90%
What happens to the
Childhood; 60-65%
percentage of body water
Adults; 60%
through the lifespan?
Older adults; declines with age
- increased adipose tissue
Why do older adults experience
- decreased muscle mass
a decrease in body percentage
- renal decline
of water?
- diminished thirst
What is the definition of osmotic Amt. of hydrostatic pressure required to oppose the osmotic
force? movement of water.
What is filtration? movement of fluid from the capillary into the interstitial space
What is reabsorption? movement of fluid from interstitial space into the capillary
What is capillary hydrostatic (blood pressure) facilitates the outward movement of water from
pressure? the capillary to the interstitial space
Water pulling
What is capillary oncotic
pressure? attracts water from the interstitial space back into the capillary
osmotically
Water pushing.
What is interstitial hydrostatic
pressure? facilitates the inward movement of water from the interstitial
space into the capillary
water pulling
What is interstitial oncotic
pressure? attracts water from the capillary into the interstitial space
osmotically.
Net filtration = forces favoring filtration - forces opposing
What is Starlings hypothesis?
filtration
1. Capillary hydrostatic pressure (blood pressure)
What forces favor filtration?
2. interstitial oncotic pressure (water pulling)
1. Plasma (capillary) oncotic pressure (water pulling)
What forces oppose filtration?
2. Interstitial hydrostatic pressure
What is the major force of capillary pressures
filtration and reabosoprtion?
hydrostatic pressure > interstitial oncotic pressure = water into
What happens at the arteriole
the insterstitial space
end of the capillary in terms of
fluid forces?
FILTRATION
capillary oncotic pressure > interstitial hydrostatic pressure = fluid
What happens at the venous
back into ciruclation
end of a capillary in terms of
fluid forces?
REABSORPTION
What is the pathophysiology of increased in forces favoring fluid filtration from the capillaries or
edema? lymphatic channels into the tissues
What is the primary ECF cation? Sodium
What is the primary ECF anion? Chloride