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Category - Health Occupations Basic Entrance Test Practice Questions

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Where is insulin manufactured?
  1. In the cells of living tissue.
  2. In the lining of the small intestine.
  3. In the gall bladder.
  4. In the pancreas.
Explanation
Answer: D - Structures within the pancreas secrete insulin directly into the blood stream. Glucose molecules are unable to pass through the cell membrane on their own. By hitching a ride onto an insulin molecule, the glucose is able to enter the cell. The pancreas is considered part of both the endocrine and digestive systems. In addition to insulin,glucagon, and other hormone secretions, the pancreas manufactures enzymes needed to breakdown fats, proteins, and starches in the digestive track.
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