WGU PATHOPHYSIOLOGY D236 ALL
EXAMS PACKAGE DEAL 2026 STUDY
GUIDE PRACTICE SOLUTION GRADED A+
⩥ What does PaO2 measure in an ABG?
Answer: measures the partial pressure of oxygen in arterial blood
⩥ What does PaCO2 measure in an ABG?
Answer: measures the partial pressure of carbon dioxide in arterial
blood. Responsible for acidity
⩥ What does HCO3 measure in an ABG?
Answer: calculated concentration of bicarbonate in arterial blood. Bicarb
is responsible for basic
⩥ What does SaCO2 measure in an ABG?
Answer: Calculated arterial oxygen saturation unless a co-oximetry is
obtained in which case it is measured.
⩥ ROME (ABG)
Answer: Respiratory=Opposite; Metabolic= Equal
, ⩥ What is homeostatisis
Answer: the body's natural, automatic process of maintaining a stable,
balanced internal environment (such as temperature, pH, and hydration)
despite changes in external conditions
⩥ What is the importance of maintaining optimal physiological health
and well-being
Answer: ensures optimal conditions for metabolic processes, allowing
for tissue repair, proper enzymatic activity, and disease prevention
(critical for survival, cellular function, and overall health)
⩥ Describe ICF (intracellular fluid)
Answer: Two-thirds of the body's water is intracellular fluid (ICF)
⩥ Describe ECF (extracellular fluid)
Answer: one-third of the body's is in the extracellular fluid (ECF) . The
two main ECF compartments are the interstitial fluid and the
intravascular fluid, the latter being the blood plasma.
⩥ How does TBW (total-body water) vary by body weight, age and fat
content
Answer: With increasing age the percentage of TBW declines further
still. The decrease is caused in part by an increased amount of fat and a
decreased amount of muscle and by a reduced ability to regulate sodium
and water balance.
EXAMS PACKAGE DEAL 2026 STUDY
GUIDE PRACTICE SOLUTION GRADED A+
⩥ What does PaO2 measure in an ABG?
Answer: measures the partial pressure of oxygen in arterial blood
⩥ What does PaCO2 measure in an ABG?
Answer: measures the partial pressure of carbon dioxide in arterial
blood. Responsible for acidity
⩥ What does HCO3 measure in an ABG?
Answer: calculated concentration of bicarbonate in arterial blood. Bicarb
is responsible for basic
⩥ What does SaCO2 measure in an ABG?
Answer: Calculated arterial oxygen saturation unless a co-oximetry is
obtained in which case it is measured.
⩥ ROME (ABG)
Answer: Respiratory=Opposite; Metabolic= Equal
, ⩥ What is homeostatisis
Answer: the body's natural, automatic process of maintaining a stable,
balanced internal environment (such as temperature, pH, and hydration)
despite changes in external conditions
⩥ What is the importance of maintaining optimal physiological health
and well-being
Answer: ensures optimal conditions for metabolic processes, allowing
for tissue repair, proper enzymatic activity, and disease prevention
(critical for survival, cellular function, and overall health)
⩥ Describe ICF (intracellular fluid)
Answer: Two-thirds of the body's water is intracellular fluid (ICF)
⩥ Describe ECF (extracellular fluid)
Answer: one-third of the body's is in the extracellular fluid (ECF) . The
two main ECF compartments are the interstitial fluid and the
intravascular fluid, the latter being the blood plasma.
⩥ How does TBW (total-body water) vary by body weight, age and fat
content
Answer: With increasing age the percentage of TBW declines further
still. The decrease is caused in part by an increased amount of fat and a
decreased amount of muscle and by a reduced ability to regulate sodium
and water balance.
