EXAM 1 2025 QUESTIONS AND
ANSWERS
4 main functions of water in the body - ANS Act as a vehicle of transportation of substances
to and from cells
4 main functions of water in the body - ANS Aid heat regulations by providing perspiration
which evaporates
4 main functions of water in the body - ANS Assist with maintence of hydrogen balance in
the body
4 main functions of water in the body - ANS To serve as a medium for the enzymatic action
for digestion
How much of the body is water? - ANS More than half - 60% males contain 50% females
contain 60% due to fat tissue
Lose more fluid through skin than adults - ANS Infants - kidneys are not as efficient as adults
less fluid absorption
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, Adults - age related decline in total body water - ANS Diminished thirst sensations; decrease
in urine concentrating abilities of kidneys; decreases the effectiveness of the antidiuretic
hormone (ADH)
Hypovolemia - ANS Abnormal decrease in the volume of blood plasma (occurs with
dehydration or bleeding)
What is critical in maintaining homeostasis - ANS Water
Cells can't function without - ANS Water - death will occur
Electrolytes are - ANS Minerals or salt dissolved in body fluid. Major source is from diet
Electrolytes are measured - ANS MEq/L
Electrolytes in - ANS A solution breaks into particles known as ions from reactions from
hydrogen and electrolyte
Ions - ANS Develop a positive electrical charge known as citations; for each positive charge in
a fluid compartment there must be a negatively charged anion so that the balance is
maintained
Circulating blood volume - ANS 4 to 6 liters
Erythrocytes - ANS Red cells - carried in plasma
Leukocytes - ANS White cells - carried in plasma
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