The nursing instructor teaches the student nurses about intrinsic factor. The instructor evaluates that learning has occurred when the students make which response?
1. "Intrinsic factor is secreted by the chief cells of the stomach."
2. "Intrinsic factor is necessary for absorption of vitamin B6."
3. "Intrinsic factor aids in the secretion of mucus to protect the stomach."
4. "Intrinsic factor is necessary for absorption of vitamin B12."
Correct Answer: 4
Rationale 1:
Chief cells secrete pepsinogen and rennin, not intrinsic factor.
Rationale 2: Intrinsic factor is necessary for the absorption of vitamin B12, not B6.
Rationale 3: Intrinsic factor does not aid in the secretion of mucus in the stomach.
Rationale 4: Parietal cells secrete intrinsic factor, which is essential for the absorption of vitamin B12.
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