The nurse is aware that vitamin B12 is absorbed in the:
Duodenum
Stomach
Small intestine
Large intestine
The Correct Answer is C
A. The duodenum is the first part of the small intestine where a significant amount of digestion takes place, but vitamin B12 is primarily absorbed in the lower part of the small intestine, called the ileum.
B. The stomach plays a role in releasing intrinsic factor, which helps in the absorption of vitamin B12, but the actual absorption occurs in the small intestine.
C. Vitamin B12 absorption primarily occurs in the lower part of the small intestine (ileum), facilitated by intrinsic factors.
D. The large intestine primarily absorbs water and electrolytes; it is not a site for vitamin B12 absorption.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Iron is a crucial component of hemoglobin in red blood cells, responsible for carrying oxygen throughout the body.
B. Magnesium is involved in various enzymatic reactions, nerve function, and muscle contractions, but it's not directly involved in oxygen transport.
C. Potassium plays a role in maintaining electrolyte balance and cell function, not in oxygen transport.
D. Phosphorus is essential for bone health, energy metabolism, and cell membrane formation but is not directly involved in oxygen transport.
Correct Answer is D
Explanation
A. Writing dietary goals or objectives usually comes after the assessment phase when the nurse and client set specific objectives based on the assessment findings.
B. Collaborating with the client to determine interventions is a crucial step in the planning phase that follows the assessment phase.
C. Developing a nutritional nursing diagnosis is part of the diagnostic phase and might come after the assessment, where data are analyzed to identify nutrition-related problems.
D. Physical measures of a person's size, form, and functional capacities, including height, weight, body mass index (BMI), skinfold thickness, etc., are fundamental aspects of a nutritional assessment.
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