ATI LPN
NCLEX Questions on Gastrointestinal System Questions
Question 1 of 5
The digestion of food and subsequent absorption into the bloodstream is important because
Correct Answer: C
Rationale: The correct answer is C because absorbed food serves as the raw material for metabolism. Once food is digested and absorbed into the bloodstream, it provides the essential nutrients needed for various metabolic processes in the body, such as energy production, growth, repair, and maintenance of tissues. This is crucial for overall body function and health. Explanation for other choices: A: Absorbed food is not toxic to the body; in fact, it provides essential nutrients. B: Absorbed food stimulating reproduction is not directly related to digestion and absorption. D: Absorbed food does not directly aid in respiration; respiration involves the exchange of gases in the lungs.
Question 2 of 5
The excretory system is responsible for moving toxic wastes, dissolved molecules, and excess heat. You would conclude that the excretory system contributes to
Correct Answer: B
Rationale: Rationale: The excretory system removes waste products to maintain dynamic equilibrium by regulating the body's internal environment. It helps control water balance, electrolyte levels, and pH, ensuring homeostasis. Circulating molecules (choice A) are more related to the circulatory system. Producing egg and sperm cells (choice C) pertains to the reproductive system. Gas exchange (choice D) is primarily carried out by the respiratory system. Thus, choice B is correct as the excretory system plays a crucial role in maintaining dynamic equilibrium in the body.
Question 3 of 5
The presence of large numbers of mitochondria in the tubule cells of nephrons suggests that the transport of materials into and out of tubule cells requires
Correct Answer: C
Rationale: The correct answer is C: energy. Mitochondria are responsible for producing energy in the form of ATP through cellular respiration, which is crucial for active transport processes in tubule cells of nephrons. Active transport requires energy to move molecules against their concentration gradient. Acids (choice A) are not directly related to the function of mitochondria in energy production. Pigments (choice B) are not involved in cellular energy production. Enzymes (choice D) facilitate reactions but do not directly provide the energy needed for transport processes. In summary, the presence of large numbers of mitochondria in tubule cells suggests the requirement of energy for material transport, making choice C the correct answer.
Question 4 of 5
A patient with chronic peptic ulcer disease underwent a gastric resection 1 month ago and is reporting nausea, bloating, and diarrhea 30 minutes after eating. What condition is this patient most likely experiencing?
Correct Answer: C
Rationale: The correct answer is C: Dumping Syndrome. After gastric resection, rapid emptying of food into the small intestine can lead to symptoms like nausea, bloating, and diarrhea shortly after eating. This is characteristic of early dumping syndrome. Gastroparesis (A) involves delayed emptying of the stomach. Fascia dehiscence (B) refers to the separation of wound edges post-surgery. Somogyi effect (D) is related to rebound hyperglycemia in diabetes, not to the symptoms described.
Question 5 of 5
A patient with a duodenal ulcer typically experiences pain that is:
Correct Answer: B
Rationale: The correct answer is B: Relieved by eating. This is because food helps to neutralize stomach acid, providing temporary relief for duodenal ulcer pain. When the patient eats, the food acts as a buffer against the acid, reducing irritation and pain. The other choices are incorrect: A is not correct because pain after eating is typical of gastric ulcers, not duodenal ulcers. C is incorrect as duodenal ulcer pain is often related to meals due to increased acid secretion. D is incorrect as duodenal ulcer pain can occur at any time, not just at night.