BIOS 256 COMPREHENSIVE EXAMINATION TEST QUESTIONS AND SOLUTIONS FULLY VERIFIED

BIOS 256 COMPREHENSIVE EXAMINATION
TEST QUESTIONS AND SOLUTIONS FULLY
VERIFIED

●● 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+