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EXAM 3 BIOS 256 CHAMBERLAIN questions with correct answers
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EXAM 3 BIOS 256 CHAMBERLAINwhat is the most abundant component of body fluid? - answerswater (45-60% total body
mass)
Why do women and obese people have less body water? - answersadipose tissue does
not hold water
new borns are ___% water - answers75
how much water is in the ICF? - answers65%
how much water is in the ECF? - answers35%
how much water is in the tissues (interstitial fluid)? - answers25%
how much water is in the blood plasma and lymphatic tissue? - answers8%
how much water is in the transcellular fluid? - answers2%
where is intracellular fluid found? - answersinside the cells
____ fluid comprises the majority of all body fluids - answersintracellular
intracellular fluid makes up __ total body fluid - answers2/3
where is extracellular fluid found? - answersoutside the cells
extracellular fluid makes up ___ total body fluid - answers1/3
, what categories are extracellular fluid divided into? - answersinterstitial fluid, blood
plasma
where is interstitial fluid found? - answersbetween the cells
what are the functions of electrolytes? - answerscontrol osmosis, regulate body
secretions, maintain acid-base balance, carry electric current, serve as cofactors
what are electrolytes maintained by? - answerskidneys reabsorbing/secreting
electrolytes, oral/IV intake, secretion of hormones (ADH, aldosterone, PTH)
what is natriuresis? - answersexcretion of sodium in the urine
what hormone promotes natriuresis? - answersANP
how does ANP promote natruiresis? - answersincreases excretion of Na+ by inhibiting
Na+ pumps
what is the most abundant cation in the ECF? - answersNa+
what is the most abundant anion in the ECF? - answersCl-
what is the most abundant cation in the ICF? - answersK+
what is the most abundant anion in the ICF? - answersphosphate
what is aldosterone? - answerssalt retaining hormone
aldosterone plays a primary role in _____ - answersadjusting sodium excretion
what is hypotension - answerslow blood pressure
what does hypotension stimulate? - answerssecretion of renin
what does renin stimulate? - answerssecretion of angiotensin
what does angiotensin stimulate? - answerssecretion of aldosterone
what does aldosterone increase? - answersNa+/H2O reabsorption and K+ secretion
what stimulates secretion of aldosterone? - answerslow Na+, high K+, angiotensin (from
low bp)
how much sodium do adults need a day? - answers0.5 g
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