ATI LPN
NCLEX Questions Gastrointestinal System Questions
Question 1 of 5
The nephron is the structural unit of the human
Correct Answer: C
Rationale: The nephron is the functional unit of the kidney, making C the correct answer.
Question 2 of 5
Which of the following medications is commonly used to reduce stomach acid in the treatment of peptic ulcer disease?
Correct Answer: C
Rationale: PPIs reduce stomach acid effectively, aiding ulcer healing, making C correct; aspirin and ibuprofen worsen ulcers.
Question 3 of 5
Every mucosa consists of:
Correct Answer: D
Rationale: Mucosa includes an epithelial layer (simple or stratified, with or without glands) and an underlying lamina propria (loose connective tissue); smooth muscle (muscularis mucosae) is optional and not always present.
Question 4 of 5
Which of the following occurs within the submucosa in most regions of the GI tract:
Correct Answer: B
Rationale: The submucosal (Meissner's) plexus regulates glandular secretion and local blood flow within the submucosa.
Question 5 of 5
Tonsils consist of:
Correct Answer: D
Rationale: Tonsils are lymphatic tissue with crypts lined by epithelium, aiding in immune surveillance.