Which of the following is true about the structures of the digestive tract?
The stomach wall is thrown into folds called villi and microvilli
The esophagus connects the pharynx with the trachea
The pyloric sphincter and ileocecal valve are located at the entrance and exit of the small intestine
The cecum and colon are parts of the small intestine
The Correct Answer is C
A. The stomach wall is thrown into folds called villi and microvilli: Villi and microvilli are found in the small intestine, not the stomach. The stomach has rugae.
B. The esophagus connects the pharynx with the trachea: The esophagus connects the pharynx to the stomach; the trachea connects to the lungs.
C. The pyloric sphincter and ileocecal valve are located at the entrance and exit of the small intestine: The pyloric sphincter regulates entry from the stomach to duodenum, and the ileocecal valve controls flow from the ileum to cecum.
D. The cecum and colon are parts of the small intestine: They are parts of the large intestine, not the small intestine.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Urine contains glucose: Glucose is not normally present in urine. Its presence typically indicates hyperglycemia, such as in uncontrolled diabetes mellitus.
B. Urine may contain drugs: Many drugs and their metabolites are excreted in the urine, which is why urine drug testing is possible.
C. Urine contains water: Water is the main component of urine, making up about 95% of its volume.
D. Urine contains uric acid: Uric acid is a normal waste product of purine metabolism, excreted by the kidneys.
Correct Answer is C
Explanation
A. Is called trypsin: Trypsin is a pancreatic enzyme, but it digests proteins, not fats.
B. Digests lipids to fatty acids and glycogen: Glycogen is related to carbohydrate storage, not a product of fat digestion.
C. Digests fats to fatty acids: Pancreatic lipase breaks down triglycerides into fatty acids and monoglycerides for absorption.
D. Is inactivated by bile: Bile actually emulsifies fats, making them more accessible to pancreatic lipase, not inactivating it.
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