The stomach passes into the [[Small Intestine - Anatomy & Physiology|small intestine]], which is subdivided into three sections; the [[Duodenum - Anatomy & Physiology|duodenum]], the [[Jejunum - Anatomy & Physiology|jejunum]] and the [[Ileum - Anatomy & Physiology|ileum]]. The small intestine recieves the ingested food from the stomach and is the main site of the chemical degradation and absorption of ingesta. Fats are exclusively broken down in this part of the alimentary tract. Carbohydrates and proteins that are not degraded in the small intestine are available for microbial fermentation in the large intestine. The wall of the small intestine produces enzymes for the digestion of protein, carbohydrate and fat. The [[Pancreas - Anatomy & Physiology|pancreas]] also produces digestive enzymes to aid this process. The [[Gall Bladder - Anatomy & Physiology|gall bladder]] produces bile which emulsifies fats for digestion. Absorption in the small intestine is facilitated by ridges in the small intestine and by the presence of villi and microvilli. | The stomach passes into the [[Small Intestine - Anatomy & Physiology|small intestine]], which is subdivided into three sections; the [[Duodenum - Anatomy & Physiology|duodenum]], the [[Jejunum - Anatomy & Physiology|jejunum]] and the [[Ileum - Anatomy & Physiology|ileum]]. The small intestine recieves the ingested food from the stomach and is the main site of the chemical degradation and absorption of ingesta. Fats are exclusively broken down in this part of the alimentary tract. Carbohydrates and proteins that are not degraded in the small intestine are available for microbial fermentation in the large intestine. The wall of the small intestine produces enzymes for the digestion of protein, carbohydrate and fat. The [[Pancreas - Anatomy & Physiology|pancreas]] also produces digestive enzymes to aid this process. The [[Gall Bladder - Anatomy & Physiology|gall bladder]] produces bile which emulsifies fats for digestion. Absorption in the small intestine is facilitated by ridges in the small intestine and by the presence of villi and microvilli. |