The primary absorption site for digestible carbohydrates is the small intestine, specifically the jejunum, which is the middle section of the small intestine.
When we consume carbohydrates, they are broken down into simpler sugars, like glucose, through the digestive process. This breakdown begins in the mouth with saliva and continues in the stomach and small intestine with the help of various enzymes.
Once the carbohydrates are transformed into monosaccharides (the simplest form of sugar), they are absorbed through the walls of the small intestine. The villi and microvilli, tiny hair-like structures lining the intestinal wall, increase the surface area for absorption and transport these nutrients into the bloodstream, where they can be utilized by the body for energy.
In summary, the small intestine, particularly the jejunum, plays a crucial role in the absorption of digestible carbohydrates, ensuring that the body receives the necessary energy source from our dietary intake.