NU220 Exam 3 2025 Questions and
Answers
What percentage of an adult's body is water?
a. 30
b. 40
c. 60
d. 90 - ✔✔c. 60
The hormone that stimulates the kidneys to reabsorb water rather than excrete it is:
a. Thyroxine
b. ADH
c. Cortisone
d. epinephrine - ✔✔b. ADH
Electrolytes in the body function to:
a. maintain fluid balance
b. stimulate enzyme action
c. synthesize protein
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,d. maintain the health of cell membranes - ✔✔a. maintain fluid balance
Which of the following is a trace mineral?
a. iron
b. sulfur
c. calcium
d. potassium - ✔✔a. iron
the primary regulator of extracellular fluid volume is:
a. chlorine
b. sodium
c. calcium
d. potassium - ✔✔b. sodium
An important function of chloride in the body is to:
a. maintain fluid balance
b. regulate metabolism
c. develop bone cells
d. control blood glucose level - ✔✔a. maintain fluid balance
Potassium:
a. is directly necessary for protein synthesis in cells
b. protects bone structure against degeneration
c. is the body's principal electrolyte inside the cells
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, d. is necessary for wound healing
e. helps maintain gastric acidity - ✔✔c. is the body's principal electrolyte inside the cells
Heart failure related to potassium loss may occur:
a. with diets low in fresh fruits and vegetables
b. as a result of severe diarrhea
c. in persons with diabetes
d. due to an excessive intake of protein - ✔✔b. as a result of severe diarrhea
The typical U.S. diet provides__________ potassium.
a. adequate
b. excessive
c. inadequate
d. no - ✔✔c. inadequate
When blood calcium falls too low, a regulatory system acts in three locations to raise it.
which of these is not one of the locations?
a. stomach
b. small intestine
c. bones
d. kidneys - ✔✔a. stomach
which of the following enhances calcium absorption from the GI tract?
a. vitamin D
b. vitamin C
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 3
Answers
What percentage of an adult's body is water?
a. 30
b. 40
c. 60
d. 90 - ✔✔c. 60
The hormone that stimulates the kidneys to reabsorb water rather than excrete it is:
a. Thyroxine
b. ADH
c. Cortisone
d. epinephrine - ✔✔b. ADH
Electrolytes in the body function to:
a. maintain fluid balance
b. stimulate enzyme action
c. synthesize protein
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
,d. maintain the health of cell membranes - ✔✔a. maintain fluid balance
Which of the following is a trace mineral?
a. iron
b. sulfur
c. calcium
d. potassium - ✔✔a. iron
the primary regulator of extracellular fluid volume is:
a. chlorine
b. sodium
c. calcium
d. potassium - ✔✔b. sodium
An important function of chloride in the body is to:
a. maintain fluid balance
b. regulate metabolism
c. develop bone cells
d. control blood glucose level - ✔✔a. maintain fluid balance
Potassium:
a. is directly necessary for protein synthesis in cells
b. protects bone structure against degeneration
c. is the body's principal electrolyte inside the cells
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
, d. is necessary for wound healing
e. helps maintain gastric acidity - ✔✔c. is the body's principal electrolyte inside the cells
Heart failure related to potassium loss may occur:
a. with diets low in fresh fruits and vegetables
b. as a result of severe diarrhea
c. in persons with diabetes
d. due to an excessive intake of protein - ✔✔b. as a result of severe diarrhea
The typical U.S. diet provides__________ potassium.
a. adequate
b. excessive
c. inadequate
d. no - ✔✔c. inadequate
When blood calcium falls too low, a regulatory system acts in three locations to raise it.
which of these is not one of the locations?
a. stomach
b. small intestine
c. bones
d. kidneys - ✔✔a. stomach
which of the following enhances calcium absorption from the GI tract?
a. vitamin D
b. vitamin C
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 3
