Nokea
Aldosterone does what?
- A. Prevents Na+ reabsorption
- B. Promotes Water reabsorption
- C. Promotes Na+ reabsorption
- D. Prevents water reabsorption
Correct Answer: C
Rationale: Aldosterone promotes sodium reabsorption in the distal tubule and collecting duct, indirectly aiding water retention.
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Pancreatic juice contains a protein-splitting enzyme called:
- A. trypsin
- B. zymogen
- C. pepsin
- D. amylase
Correct Answer: A
Rationale: Trypsin is a pancreatic enzyme that digests proteins.
Following a diagnosis of Zollinger-Ellison syndrome, a 70-year-old woman undergoes gastrectomy. Her physician informs her that she will require lifelong intramuscular vitamin B12 injections. Which specific type of cells' absence is responsible for the need for vitamin replacement?
- A. Chief cells
- B. G cells
- C. Goblet cells
- D. Parietal cells
Correct Answer: D
Rationale: Parietal cells produce intrinsic factor, necessary for vitamin B12 absorption; their absence after gastrectomy necessitates B12 injections.
Submandibular gland following is true except:
- A. Has thick capsule & thin septa
- B. Formed mainly of serous acini
- C. Has no striated ducts
- D. Secrete 70% of salivary secretion
Correct Answer: C
Rationale: The submandibular gland has prominent striated ducts, like other major salivary glands.
The nurse is teaching classes on development to parents of toddlers. A parent asks when a child should be toilet trained. The nurse bases a response on knowledge that sphincter control is generally possible by age months. Provide a numeric answer.
- A. 18
- B. 24
- C. 30
- D. 36
Correct Answer: B
Rationale: Sphincter control typically develops around 24 months, enabling toilet training.
Small finger-like projection, which produce numerous microscopic projections are supplied with a network of
- A. Blood capillaries and lacteal
- B. Blood capillaries only
- C. Lacteal only
- D. A large lymphoid vessel and valves
Correct Answer: A
Rationale: Villi contain blood capillaries and lacteals for absorbing nutrients like glucose and fats.