Which of the following best describes how food moves through the digestive system, from mouth to anus?
Defecation
Emulsification
Peristalsis
Mastication
The Correct Answer is C
A. Defecation: This is the elimination of feces from the rectum, not the process of moving food through the GI tract.
B. Emulsification: This refers to breaking down fat into smaller droplets (done by bile), not the movement of food.
C. Peristalsis: Peristalsis is the rhythmic muscular contraction that propels food through the digestive tract.
D. Mastication: This is chewing, a mechanical process that occurs in the mouth before food enters the esophagus.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Glucose is used up by the metabolizing nephron units: Nephrons do not metabolize all glucose; their role is to filter and reabsorb.
B. Glucose cannot be filtered: Glucose is a small molecule and is easily filtered by the glomerulus.
C. Glucose is converted to ammonia and excreted as urea: This describes protein metabolism, not glucose.
D. All filtered glucose is reabsorbed: In healthy kidneys, 100% of filtered glucose is reabsorbed in the proximal tubule, so none appears in urine unless blood levels are too high (e.g., diabetes).
Correct Answer is ["B","C","D","E"]
Explanation
A. Producing glucagon: Glucagon is produced by the alpha cells of the pancreas, not the liver.
B. Synthesis of bile: The liver synthesizes bile, which is stored in the gallbladder and aids in fat digestion.
C. Metabolism of proteins, fats, carbohydrates: The liver plays a central role in metabolism, processing amino acids, lipids, and glucose.
D. Detoxifying drugs: The liver detoxifies substances, including medications and alcohol, converting them into less harmful forms.
E. Storage of fat-soluble vitamins: The liver stores vitamins A, D, E, and K, which are fat-soluble and essential for various functions.
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