EXAM 3 -- BIOS 256 CHAMBERLAIN
2025 100% Verified Questions And
Answers.
what is the most abundant component of body fluid? - Answer - water (45-60% total body mass)
Why do women and obese people have less body water? - Answer - adipose tissue does not hold water
new borns are ___% water - Answer - 75
how much water is in the ICF? - Answer - 65%
how much water is in the ECF? - Answer - 35%
how much water is in the tissues (interstitial fluid)? - Answer - 25%
how much water is in the blood plasma and lymphatic tissue? - Answer - 8%
how much water is in the transcellular fluid? - Answer - 2%
where is intracellular fluid found? - Answer - inside the cells
____ fluid comprises the majority of all body fluids - Answer - intracellular
intracellular fluid makes up __ total body fluid - Answer - 2/3
where is extracellular fluid found? - Answer - outside the cells
,extracellular fluid makes up ___ total body fluid - Answer - 1/3
what categories are extracellular fluid divided into? - Answer - interstitial fluid, blood plasma
where is interstitial fluid found? - Answer - between the cells
what are the functions of electrolytes? - Answer - control osmosis, regulate body secretions, maintain
acid-base balance, carry electric current, serve as cofactors
what are electrolytes maintained by? - Answer - kidneys reabsorbing/secreting electrolytes, oral/IV
intake, secretion of hormones (ADH, aldosterone, PTH)
what is natriuresis? - Answer - excretion of sodium in the urine
what hormone promotes natriuresis? - Answer - ANP
how does ANP promote natruiresis? - Answer - increases excretion of Na+ by inhibiting Na+ pumps
what is the most abundant cation in the ECF? - Answer - Na+
what is the most abundant anion in the ECF? - Answer - Cl-
what is the most abundant cation in the ICF? - Answer - K+
what is the most abundant anion in the ICF? - Answer - phosphate
what is aldosterone? - Answer - salt retaining hormone
, aldosterone plays a primary role in _____ - Answer - adjusting sodium excretion
what is hypotension - Answer - low blood pressure
what does hypotension stimulate? - Answer - secretion of renin
what does renin stimulate? - Answer - secretion of angiotensin
what does angiotensin stimulate? - Answer - secretion of aldosterone
what does aldosterone increase? - Answer - Na+/H2O reabsorption and K+ secretion
what stimulates secretion of aldosterone? - Answer - low Na+, high K+, angiotensin (from low bp)
how much sodium do adults need a day? - Answer - 0.5 g
how much sodium does the average american diet contain? - Answer - 3-7 g/day
what is alkalosis? - Answer - pH above 7.45
what happens during alkalosis? - Answer - H+ diffuses out of the cells and K+ diffuses in
during alkalosis, membrane ____ occurs which leads to the nerves being overstimulated - Answer -
depolarization
a person will not live if the pH is below ___ or ___ - Answer - 7.0, 7.7
what is acidosis? - Answer - pH below 7.35
2025 100% Verified Questions And
Answers.
what is the most abundant component of body fluid? - Answer - water (45-60% total body mass)
Why do women and obese people have less body water? - Answer - adipose tissue does not hold water
new borns are ___% water - Answer - 75
how much water is in the ICF? - Answer - 65%
how much water is in the ECF? - Answer - 35%
how much water is in the tissues (interstitial fluid)? - Answer - 25%
how much water is in the blood plasma and lymphatic tissue? - Answer - 8%
how much water is in the transcellular fluid? - Answer - 2%
where is intracellular fluid found? - Answer - inside the cells
____ fluid comprises the majority of all body fluids - Answer - intracellular
intracellular fluid makes up __ total body fluid - Answer - 2/3
where is extracellular fluid found? - Answer - outside the cells
,extracellular fluid makes up ___ total body fluid - Answer - 1/3
what categories are extracellular fluid divided into? - Answer - interstitial fluid, blood plasma
where is interstitial fluid found? - Answer - between the cells
what are the functions of electrolytes? - Answer - control osmosis, regulate body secretions, maintain
acid-base balance, carry electric current, serve as cofactors
what are electrolytes maintained by? - Answer - kidneys reabsorbing/secreting electrolytes, oral/IV
intake, secretion of hormones (ADH, aldosterone, PTH)
what is natriuresis? - Answer - excretion of sodium in the urine
what hormone promotes natriuresis? - Answer - ANP
how does ANP promote natruiresis? - Answer - increases excretion of Na+ by inhibiting Na+ pumps
what is the most abundant cation in the ECF? - Answer - Na+
what is the most abundant anion in the ECF? - Answer - Cl-
what is the most abundant cation in the ICF? - Answer - K+
what is the most abundant anion in the ICF? - Answer - phosphate
what is aldosterone? - Answer - salt retaining hormone
, aldosterone plays a primary role in _____ - Answer - adjusting sodium excretion
what is hypotension - Answer - low blood pressure
what does hypotension stimulate? - Answer - secretion of renin
what does renin stimulate? - Answer - secretion of angiotensin
what does angiotensin stimulate? - Answer - secretion of aldosterone
what does aldosterone increase? - Answer - Na+/H2O reabsorption and K+ secretion
what stimulates secretion of aldosterone? - Answer - low Na+, high K+, angiotensin (from low bp)
how much sodium do adults need a day? - Answer - 0.5 g
how much sodium does the average american diet contain? - Answer - 3-7 g/day
what is alkalosis? - Answer - pH above 7.45
what happens during alkalosis? - Answer - H+ diffuses out of the cells and K+ diffuses in
during alkalosis, membrane ____ occurs which leads to the nerves being overstimulated - Answer -
depolarization
a person will not live if the pH is below ___ or ___ - Answer - 7.0, 7.7
what is acidosis? - Answer - pH below 7.35
