A client is assessed by the nurse after a hemodialysis session. The nurse notes bleeding from the client's nose and around the intravenous catheter. What action by the nurse is the priority?

Correct Answer: D

Rationale: Bleeding suggests excess heparin from dialysis; protamine sulfate reverses it.

Correct Answer: C

Rationale: Nephrons flow: glomerulus, proximal tubule, nephron loop, distal tubule.

Correct Answer: C

Rationale: Ascending limb is water-impermeable, aiding urine concentration.

Correct Answer: A

Rationale: Aldosterone is produced by adrenal cortex, not kidneys.

Correct Answer: C

Rationale: Ascending limb is impermeable to water, unlike others.