ATI LPN
Upper Gastrointestinal System NCLEX Questions Questions
Question 1 of 5
A client with acute gastritis is likely to present with which of the following symptoms?
Correct Answer: B
Rationale: Acute gastritis typically presents with nausea, vomiting, and epigastric pain, often exacerbated by eating, due to irritation of the stomach lining. Black, tarry stools suggest upper GI bleeding, which may complicate gastritis but isn't a primary symptom. Severe weight loss and diarrhea are more indicative of chronic conditions like malignancy or malabsorption. Difficulty swallowing and cough relate more to esophageal issues like GERD.
Question 2 of 5
The main function of the human digestive system is to
Correct Answer: B
Rationale: The digestive system processes organic molecules (carbohydrates, proteins, fats) into smaller units that can be absorbed and enter cells for energy, growth, or repair. Waste removal is excretory. Glucose breakdown occurs in cells, not digestion. Amino acid conversion is synthetic, not digestive.
Question 3 of 5
In an autotrophic organism, substance B functions as a
Correct Answer: A
Rationale: In autotrophs (e.g., plants), substance B (likely glucose from photosynthesis diagrams) is a source of energy for cellular processes. It's not a hormone , vitamin , or vague biotic resource .
Question 4 of 5
Digestion takes place in a long tube-like canal called the alimentary canal, or the digestive tract. Food travels through these organs in the following order:
Correct Answer: A
Rationale: The correct digestive order is mouth, gullet (esophagus), stomach, small intestine, large intestine, rectum, making A correct. B reverses small/large intestine, C misplaces esophagus, and D misorders stomach and gullet.
Question 5 of 5
If sodium bicarbonate (NaHCO3) is not released as part of the pancreatic juice, the pH of the
Correct Answer: D
Rationale: Sodium bicarbonate neutralizes acidic chyme in the small intestine; without it, the small intestine remains acidic, making D correct.