Quiz 3: water and salt pt 1 Flashcards
food sources of water
all foods
most essential nutrient
water
most water comes from
beverages
osmolarity =
conc of solute/1L
functions of water
- chemical rxns
- body temp regulation
- lube + protection
- solvent + transport medium
- maintenance of fluid volume
- acid-base balance
water output depends on
physical activity
methods of water output
insensible - skin
insensible - lungs (breathing out)
sweat
urine
feces
prolonged heavy exercise =
more excretion via sweat so we excrete less via other methods
where in metabolism do we make water
- FA oxidation
- cellular respiration
normal person what happens to most of the water they ingest and make
it is excreted
water intake
food:
bevs:
water intake
food: 25-35%
bevs: 65-75%
in the US do we get enough water
no
water intake for
men
women
water intake for
men: 3.7 L
women: 2.7 L
water intake needs vary based on (2)
activity level
energy intake
water recommendation
25-40 mL per kg of body weight
body is __% water
newborns are __% water
body is 50% water
newborns are 75% water
__ is way in and way out for water
plasma is way in and way out for water
which has more water: IC or EC
IC
in order, pools of water
IC > interstitial fluid > plasma
EC fluid = __ + __
EC fluid = plasma + interstitial fluid
volume of EC and IC must be in
perfect balance
__ and __ are highly regulated
water and osmolarity are highly regulated
isotonic =
hypotonic =
hypertonic =
isotonic = happy
hypotonic = cell swells
hypertonic = cell shrinks
hypotonic can occur during
parenteral nutrition
swelling of cells causes
edema