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NURS 1220 Week 3 Test With Solution
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NURS 1220 Week 3 Test WithSolution
Acid: - ANSWER A substance that increases the hydrogen ion concentration
of a solution.
Base/alkaline: - ANSWER substances that binds free hydrogen ions in
solutions and lowers the amount of free hydrogen in the solution
Buffers: - ANSWER substances that help keep body pH normal levels
pH: - ANSWER measurement of the free hydrogen ions in the body (goal
7.35-7.45)
Acid-base balance: - ANSWER The process of regulating the pH, as well as the
bicarbonate concentration in the partial pressure of CO2 in body fluids
Two processes that work to keep a stable level of hydrogen ions in the body:
- ANSWER metabolic processes through the kidneys
the respiratory processes through the lungs
Alterations in acid base balance can affect a variety of processes in the
human body like the following: - ANSWER -shape and function of hormones
& enzymes
-fluid & electrolyte balance
, -excitability of membranes
-effectiveness of various medications
Control mechanisms are - ANSWER the kidneys and lungs
Respiratory/lungs: - ANSWER When chemical buffers alone cannot prevent
changes in blood pH levels, the respiratory system is the second line of
defense
What is the first line of defense? - ANSWER Buffers would be the first line of
defense in the body to correct any fluctuations in acid-base balance
As CO2 levels rise above normal level what occurs in the body? - ANSWER the
body begins to increase the rate and depth of breathing-causing a pt to
hyperventilate causing the level of CO2 to reduce
As CO2 levels drop below normal level what occurs in the body? - ANSWER
the body begins to decrease the rate and depth of breathing-causing a pt to
hypo ventilate causing the level of CO2 to increase
When chemical buffers in the respiratory system are unsuccessful in
preventing changes in the blood pH, - ANSWER the metabolic system is the
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