A nurse is caring for a client who has peptic ulcer disease. The nurse should monitor the client for which of the following findings as an indication of gastrointestinal perforation?

Correct Answer: B

Rationale: The correct answer is B: Sudden abdominal pain. Gastrointestinal perforation is a serious complication of peptic ulcer disease. Sudden abdominal pain is a key indicator as perforation can lead to leakage of stomach contents into the abdominal cavity causing severe pain. Hyperactive bowel sounds (A) are more indicative of bowel obstruction. Increased blood pressure (C) can occur due to pain or stress but is not specific to gastrointestinal perforation. Bradycardia (D) is not typically associated with gastrointestinal perforation.

Correct Answer: D

Rationale: The correct answer is D because diverticulitis typically presents with crampy pain in the lower left quadrant of the abdomen and a low-grade fever. This is due to inflammation or infection of the diverticula. A: Periodic rectal hemorrhage is more characteristic of diverticular bleeding, not diverticulitis. B: Hypertension and tachycardia are not typically associated with diverticulitis but may occur in severe cases or with complications. C: Vomiting and elevated temperature can occur but are not as specific to diverticulitis as the combination of symptoms described in option D.

Correct Answer: D

Rationale: The correct answer is D: vagus. The vagus nerve carries parasympathetic motor neurons to the enteric plexi located in the gastrointestinal tract. It innervates most of the organs in the thorax and abdomen, controlling functions like digestion and heart rate. Choices A, B, and C are incorrect because they do not carry parasympathetic motor neurons to the enteric plexi. Oculomotor (A) innervates muscles responsible for eye movement, facial (B) innervates facial muscles and salivary glands, and glossopharyngeal (C) innervates the tongue and pharynx, but they do not specifically target the enteric plexi in the gastrointestinal tract.

Correct Answer: D

Rationale: The correct answer is D. Dentin and cementum are the two regions of a tooth that contain living cells. Dentin is the hard tissue beneath the enamel and cementum that forms the bulk of the tooth structure. It contains living cells called odontoblasts responsible for dentin formation. Cementum is the hard tissue covering the tooth root and is essential for anchoring the tooth in the jawbone. Cementum contains living cells called cementoblasts responsible for cementum formation. Therefore, both dentin and cementum are vital regions of a tooth that house living cells involved in tooth development and maintenance. A: Dentin and enamel - Enamel is the outermost layer of the tooth and does not contain living cells. B: Anatomical crown and cementum - Anatomical crown is not a region of the tooth containing living cells. C: Enamel and cementum - Enamel does not contain living cells, only mineralized structures.

Correct Answer: C

Rationale: The correct answer is C: chief or zymogenic cells. These cells are responsible for producing pepsinogen, the inactive form of pepsin, which is an enzyme that helps in protein digestion. Chief cells secrete pepsinogen into the gastric lumen. Endocrine cells (A) produce hormones like gastrin, mucous neck cells (B) secrete mucus to protect the stomach lining, and parietal cells (D) secrete hydrochloric acid to create an acidic environment for pepsinogen activation. Therefore, the correct choice is C as it directly produces pepsinogen.