A&P: Lab 47

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Acid

Substance that release H+ in solution (body fluids).

Base

Hydroxyl ion (OH-) or bicarbonate ion (HCO3-) substance that binds to H+.

Strong Acid

Completely dissociates in solution, releasing all of its hydrogen ions and thus lowering solution pH level.

Weak Acid

Does not release all of it's hydrogen ions in a solution.

Strong Base

Strong tendency to bind H+ and having a lesser effect on solution pH.

Weak Base

Bind less of H+, having lesser effect on solution pH.

PCO2 Levels

40-45 mm Hg

Bicarbonate Levels

22-30 mmol/L

pH Levels

7.35-7.45

In Order to Maintain Homeostasis..

Utilize both chemical and physiological buffering systems.

Formula for Acid Base Balance

H₂O+CO₂⇌H₂CO₃⇌H⁺+HCO₃-

Acidosis

pH falls below 7.35.

Alkalosis

pH rise over 7.45.

Respiratory Acidosis

Hypoventilation, decrease in blood that include: airway obstruction, depression of the respiratory center in the brain stem, lung disease, and drug overdose. Secretion of H+ into urine causes an increase in plasma pH.

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