EXAM 3 -- BIOS 256 CHAMBERLAIN || WITH A+
GUARANTEED SOLUTIONS.
what is the most abundant component of body fluid? correct answers water (45-60% total body
mass)
Why do women and obese people have less body water? correct answers adipose tissue does not
hold water
new borns are ___% water correct answers 75
how much water is in the ICF? correct answers 65%
how much water is in the ECF? correct answers 35%
how much water is in the tissues (interstitial fluid)? correct answers 25%
how much water is in the blood plasma and lymphatic tissue? correct answers 8%
how much water is in the transcellular fluid? correct answers 2%
where is intracellular fluid found? correct answers inside the cells
____ fluid comprises the majority of all body fluids correct answers intracellular
intracellular fluid makes up __ total body fluid correct answers 2/3
where is extracellular fluid found? correct answers outside the cells
extracellular fluid makes up ___ total body fluid correct answers 1/3
what categories are extracellular fluid divided into? correct answers interstitial fluid, blood
plasma
where is interstitial fluid found? correct answers between the cells
what are the functions of electrolytes? correct answers control osmosis, regulate body secretions,
maintain acid-base balance, carry electric current, serve as cofactors
what are electrolytes maintained by? correct answers kidneys reabsorbing/secreting electrolytes,
oral/IV intake, secretion of hormones (ADH, aldosterone, PTH)
what is natriuresis? correct answers excretion of sodium in the urine
what hormone promotes natriuresis? correct answers ANP
, how does ANP promote natruiresis? correct answers increases excretion of Na+ by inhibiting
Na+ pumps
what is the most abundant cation in the ECF? correct answers Na+
what is the most abundant anion in the ECF? correct answers Cl-
what is the most abundant cation in the ICF? correct answers K+
what is the most abundant anion in the ICF? correct answers phosphate
what is aldosterone? correct answers salt retaining hormone
aldosterone plays a primary role in _____ correct answers adjusting sodium excretion
what is hypotension correct answers low blood pressure
what does hypotension stimulate? correct answers secretion of renin
what does renin stimulate? correct answers secretion of angiotensin
what does angiotensin stimulate? correct answers secretion of aldosterone
what does aldosterone increase? correct answers Na+/H2O reabsorption and K+ secretion
what stimulates secretion of aldosterone? correct answers low Na+, high K+, angiotensin (from
low bp)
how much sodium do adults need a day? correct answers 0.5 g
how much sodium does the average american diet contain? correct answers 3-7 g/day
what is alkalosis? correct answers pH above 7.45
what happens during alkalosis? correct answers H+ diffuses out of the cells and K+ diffuses in
during alkalosis, membrane ____ occurs which leads to the nerves being overstimulated correct
answers depolarization
a person will not live if the pH is below ___ or ___ correct answers 7.0, 7.7
what is acidosis? correct answers pH below 7.35
what happens during acidosis? correct answers H+ diffuses into cells and K+ diffuses out
(elevates K+ in ECF)
GUARANTEED SOLUTIONS.
what is the most abundant component of body fluid? correct answers water (45-60% total body
mass)
Why do women and obese people have less body water? correct answers adipose tissue does not
hold water
new borns are ___% water correct answers 75
how much water is in the ICF? correct answers 65%
how much water is in the ECF? correct answers 35%
how much water is in the tissues (interstitial fluid)? correct answers 25%
how much water is in the blood plasma and lymphatic tissue? correct answers 8%
how much water is in the transcellular fluid? correct answers 2%
where is intracellular fluid found? correct answers inside the cells
____ fluid comprises the majority of all body fluids correct answers intracellular
intracellular fluid makes up __ total body fluid correct answers 2/3
where is extracellular fluid found? correct answers outside the cells
extracellular fluid makes up ___ total body fluid correct answers 1/3
what categories are extracellular fluid divided into? correct answers interstitial fluid, blood
plasma
where is interstitial fluid found? correct answers between the cells
what are the functions of electrolytes? correct answers control osmosis, regulate body secretions,
maintain acid-base balance, carry electric current, serve as cofactors
what are electrolytes maintained by? correct answers kidneys reabsorbing/secreting electrolytes,
oral/IV intake, secretion of hormones (ADH, aldosterone, PTH)
what is natriuresis? correct answers excretion of sodium in the urine
what hormone promotes natriuresis? correct answers ANP
, how does ANP promote natruiresis? correct answers increases excretion of Na+ by inhibiting
Na+ pumps
what is the most abundant cation in the ECF? correct answers Na+
what is the most abundant anion in the ECF? correct answers Cl-
what is the most abundant cation in the ICF? correct answers K+
what is the most abundant anion in the ICF? correct answers phosphate
what is aldosterone? correct answers salt retaining hormone
aldosterone plays a primary role in _____ correct answers adjusting sodium excretion
what is hypotension correct answers low blood pressure
what does hypotension stimulate? correct answers secretion of renin
what does renin stimulate? correct answers secretion of angiotensin
what does angiotensin stimulate? correct answers secretion of aldosterone
what does aldosterone increase? correct answers Na+/H2O reabsorption and K+ secretion
what stimulates secretion of aldosterone? correct answers low Na+, high K+, angiotensin (from
low bp)
how much sodium do adults need a day? correct answers 0.5 g
how much sodium does the average american diet contain? correct answers 3-7 g/day
what is alkalosis? correct answers pH above 7.45
what happens during alkalosis? correct answers H+ diffuses out of the cells and K+ diffuses in
during alkalosis, membrane ____ occurs which leads to the nerves being overstimulated correct
answers depolarization
a person will not live if the pH is below ___ or ___ correct answers 7.0, 7.7
what is acidosis? correct answers pH below 7.35
what happens during acidosis? correct answers H+ diffuses into cells and K+ diffuses out
(elevates K+ in ECF)
