ACTUAL Exam Questions and CORRECT
Answers
% water in body: infant, adult, older adult 126 - CORRECT ANSWER - 80-70%
60-50%
45-55%
water intake: two ways and how much - CORRECT ANSWER - food/drink & metabolism
2.2L/day intake and .3L/day metabolic production
only cell in the body without a nucleus or mitochondria....why - CORRECT ANSWER -
RBCs
so they can have more room for H
type of nerves that control skeletal muscle - CORRECT ANSWER - somatomotor nerves
water loss: 4 ways, how much? - CORRECT ANSWER - skin/lungs(.9L/day)
urine(1.5L/day)
feces(.1L/day)
,what metabolic reaction gives us water - CORRECT ANSWER - complete oxidation of
glucose
where does urine get yellow color from - CORRECT ANSWER - urobilin
insensible water loss: what is it and give an example - CORRECT ANSWER - constant
sweating or the liquid you exhale
this is insensible cuz you cant feel or notice it
how do nutrients get to a tissue - CORRECT ANSWER - blood
how do things go from blood to interstitial fluid - CORRECT ANSWER - fenestrated
pores in caps
blood brain barrier - CORRECT ANSWER - fenestrated are replaced w tight junctions
they do not have pores therefore protects brain
what can cross the blood brain barrier - CORRECT ANSWER - high lipid
solubility...phospholipid bilayer
NOT WATER SOLUBLE
examples of ECF - CORRECT ANSWER - plasma and interstitial fluid
plasma vs serum - CORRECT ANSWER - plasma has fibrinogen, serum does not
, only 2 things that cannot cross the capillary wall from plasma to interstitial fluid - CORRECT
ANSWER - plasma proteins and blood cells
glucose levels in the plasma is always equal to glucose levels in the ? - CORRECT
ANSWER - interstitial fluid
arteriolar dilation causes ?? - CORRECT ANSWER - rubor and calor
PC - CORRECT ANSWER - hydrostatic Pressure in Capillary
PI - CORRECT ANSWER - hydrostatic pressure in the interstitial fluid
relationship between PC and PI - CORRECT ANSWER - PC>PI
interstitial space is always limited
plasma proteins dont go into the ISF
osmotic pressure of plasma protein - CORRECT ANSWER - oncotic pressure(waste goes
into blood so water follows?)
(piC and piI)
why is histamine initially released after accident? - CORRECT ANSWER - damaged mast
cells
what causes the pain to happen after 24 hours - CORRECT ANSWER - prostaglandins
take over for histamine