SCI 225 Pathophysiology Week 2/3 Quiz || with Complete Solutions.

A 54-year-old male with a long history of smoking complains of excessive tiredness, shortness of breath, and overall ill feelings. Lab results reveal decreased pH, increased CO2, and normal bicarbonate ion. These findings help to confirm the diagnosis of: respiratory alkalosis. metabolic acidosis. respiratory acidosis. metabolic alkalosis. correct answers respiratory acidosis. A decreased pH indicates acidosis. With increased CO2, it is respiratory acidosis. The bicarbonate is normal, so it cannot be metabolic acidosis. A 35-year-old male weighs 70 kg. Approximately how much of this weight is considered the total volume of body water? 5 L 10 L 28 L 42 L correct answers 42 L The total volume of body water for a 70-kg person is about 42 L or two thirds of 70 kg. A nurse is reviewing lab reports. The nurse recalls blood plasma is located in which of the following fluid compartments? Intracellular fluid (ICF) Extracellular fluid (ECF) Interstitial fluid Intravascular fluid correct answers Intravascular fluid Blood plasma is the intravascular fluid. ICF is fluid in the cells. ECF is all the fluid outside the cells. Interstitial fluid is fluid between the cells and outside the blood vessels. Water movement between the ICF and ECF compartments is determined by: osmotic forces. plasma oncotic pressure. antidiuretic hormone. buffer systems. correct answers osmotic forces. Osmotic forces determine water movement between the ECF and ICF compartments. Oncotic pressure pulls water at the end of the capillary, which makes it move between intra and extra as interstitial is considered extra. The antidiuretic hormone regulates water balance, which would make water move between the intra- and extracellular spaces. Buffer systems help regulate acid balance.