ATI RN
Questions on Cells Tissues and Organs Questions
Question 1 of 5
What is the primary function of the centrosome in cell division?
Correct Answer: B
Rationale: The centrosome organizes microtubules for spindle formation.
Question 2 of 5
Plasma bilirubin
Correct Answer: C
Rationale: Bilirubin, a heme breakdown product, is protein-bound and does not cross the blood-brain barrier under normal conditions.
Question 3 of 5
The osmolality of
Correct Answer: A
Rationale: Osmolality affects freezing point (colligative property); ICF and ECF osmolality are equal (~290 mOsm/kg).
Question 4 of 5
Intravenous infusion of
Correct Answer: D
Rationale: Isotonic (5%) dextrose expands ICF and ECF as it's metabolized, leaving water to distribute across compartments.
Question 5 of 5
A patient with an uncompensated respiratory alkalosis may have
Correct Answer: C
Rationale: Hyperventilation (e.g., altitude) lowers PCO2, raising pH and causing tetany; pH > 7.45 in uncompensated cases.