Question

Describe the absorption of glucose when its concentration is higher in the blood than in the illeum

Answer 1

The absorption of glucose in the ileum occurs through simple diffusion and active transport when the concentration is higher in the blood than in the ileum.

Step-by-step explanation:

The absorption of glucose occurs in the small intestine, specifically in the ileum. When the concentration of glucose is higher in the blood than in the ileum, two main processes take place: simple diffusion and active transport.

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2. During simple diffusion, glucose moves down a concentration gradient from an area of higher concentration in the lumen of the ileum to an area of lower concentration in the blood.
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4. Once the concentration of glucose in the lumen equals that of the blood, active transport takes place. Glucose binds to a carrier protein on the outer membrane of the intestinal wall and is transported into the cell along with two Na+ ions. The glucose is then released into the cytoplasm of the cell and diffuses into the blood.
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