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 A
Explanation
A. Kwashiorkor is a severe form of malnutrition that occurs when a child is weaned from breast milk and lacks sufficient protein intake.
B. Lactose intolerance refers to the body's inability to digest lactose, a sugar found in milk, leading to gastrointestinal symptoms when dairy products are consumed.
C. Amino acid poisoning is an acute condition caused by excessive intake of a specific amino acid beyond the body's capacity to metabolize it, resulting in toxicity.
D. Malnutrition is a general term referring to inadequate nutrition, which can encompass various conditions, including kwashiorkor.
Correct Answer is C
Explanation
A. The duodenum is the first part of the small intestine but is not the primary site for vitamin B12 absorption. It's primarily absorbed in the lower part of the small intestine called the ileum.
B. While the stomach plays a role in releasing intrinsic factor that aids in B12 absorption, the actual absorption occurs in the small intestine, particularly the ileum.
C. Vitamin B12 absorption primarily occurs in the lower part of the small intestine, facilitated by intrinsic factors.
D. The large intestine is mainly responsible for water absorption and electrolyte balance, not vitamin B12 absorption.
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