ATI RN
Chapter 3 Cells and Tissues Review Questions Answers Questions
Question 1 of 5
The type of junction in which cytoskeletal fibers between two cells join to hold the cells together.
Correct Answer: B
Rationale: Adhesion junctions (desmosomes) use cytoskeletal fibers to anchor cells together, providing mechanical strength.
Question 2 of 5
The pH
Correct Answer: A
Rationale: Normal arterial pH is 7.35-7.45; urine pH is typically acidic (<7) to excrete H+.
Question 3 of 5
Excessive tissue fluid (oedema) in the legs may
Correct Answer: A
Rationale: Oedema is an increase in the interstitial component of ECF.
Question 4 of 5
In investigating a patient's acid-base status
Correct Answer: C
Rationale: pH is calculated via Henderson-Hasselbalch: pH = 6.1 + log([HCO3-]/0.03*PCO2).
Question 5 of 5
Intravenous infusion of one litre of
Correct Answer: A
Rationale: Normal saline (0.9%) expands ECF primarily as Na+ stays extracellular.