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.
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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 B
Explanation
A. Lactose intolerance is more related to the absence of the enzyme lactase, commonly found in individuals who have a reduced ability to digest lactose (milk sugar), regardless of their dietary choices.
B. Vegan diets may lack sufficient iron intake as plant-based sources of iron (non-heme iron) are not as readily absorbed by the body compared to heme iron found in animal products. This can put vegans at a higher risk of iron deficiency.
C. Diabetes risk is influenced by various factors, including genetics and lifestyle, rather than specifically by following a vegan diet.
D. Pneumonia risk is not directly associated with following a vegan diet but can be influenced by overall health, immune function, and exposure to pathogens.
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