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pH
pH
15
Physiology
Not Applicable
09/26/2012

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Cards

Term
2 types of acids in the body
Definition
– Volatile acid (aka carbonic acid)
– Nonvolatile acid (fixed or non-carbonic acid)
Term
Volatile acid
Definition
Carbonic acid (H2CO3)
– Most abundant
– In equilibrium with dissolved a gas
Term
The H+ produced are immediately buffered in
the RBC by hemoglobin called
Definition
isohydric buffering
Term
Nonvolatile or fixed acids
Definition
Lactic acid, phosphoric acid, sulfuric acid
– H+ are buffered by HCO3-
Term
2 classifications of blood buffers:
Definition
Bicarbonate buffer system -53%
Non-bicarbonate buffer system-47%
Term
Non-bicarbonate buffer system consists of
Definition
Phosphates
Proteins
Closed system
Term
The only buffer system that can buffer H+
produced by volatile (carbonic) acids is the
Definition
nonbicarbonate buffer system
Term
Bicarbonate and non-bicarbonate buffer systems
can buffer H+ produced by
Definition
fixed acids
Term
Primary acid excretion organs of the body are
Definition
Lungs - only volatile acid
Kidneys-Fixed acids
Term
Kidney Physically remove

Three functions:
Definition
H+

• Excretion
– Glomerulus receives Na+, K+, HCO3- in filtrate
• Secretion
– H+ are secreted into renal tubules from capillaries
• Reabsorption
– HCO3- , Na+, K+ are reabsorbed as needed
Term
As long as the ratio is ______the pH will be normal
Definition
20:1 HCO3:CO2
Term
Hypocapnia is synonymous with
Definition
R.alkalosis
Term
Anion gap is the difference between ___and the sum of ____
Definition
Cl- and HCO3- Anion Gap = Na+ - (Cl- + HCO3-)
Term
Base excess is reported in units of mEq/L, and the
normal value can range from
Definition
-2 to +2
Term
paraesthesia
Definition
numbness or tingling sensation in the extremities- respiratory alkalosis
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