A nurse is assisting with teaching a class about the process of digestion. The nurse should include that food is transported through the gastrointestinal tract starting from which of the following locations?
Stomach
Mouth
Rectum
Small intestine
The Correct Answer is B
A. The stomach is where food mixes with digestive juices and begins the process of breaking down, but it's not the initial site where food enters the gastrointestinal tract.
B. The mouth is where digestion begins as food is chewed and mixed with saliva, forming a bolus that starts the process of digestion before moving through the esophagus.
C. The rectum is the final portion of the large intestine where waste is stored before elimination, not the starting point of digestion.
D. The small intestine is the primary site of nutrient absorption but is not the starting point where food enters the gastrointestinal tract.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. A BMI in the range of 18.5 to 24.9 is typically considered within the "healthy weight" category.
B. A BMI below 18.5 is categorized as "underweight," indicating a lower-than-ideal body weight for a person's height.
C. A BMI of 25 to 29.9 falls into the "overweight" category.
D. A BMI of 30 or above is classified as "obese."
Correct Answer is A
Explanation
A. Saliva contains enzymes like amylase that break down starches into simpler sugars, initiating their digestion in the mouth.
B. Fat digestion primarily starts in the small intestine with the action of bile and pancreatic lipase.
C. Protein digestion begins in the stomach with the action of enzymes like pepsin.
D. Fiber is not digested by enzymes in the human digestive system, though it aids in digestion and promotes bowel movements.
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