Deborah Naturinda
Jun 10
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ChatGPT
Jun 10
1. Location: The duodenum is the first part of the small intestine and is located immediately after the stomach, while the ileum is the last part of the small intestine and is located before the large intestine.
2. Length: The duodenum is shorter in length compared to the ileum. The duodenum is approximately 25-30 cm long, while the ileum is approximately 3-4 meters long.
3. Function: The duodenum is responsible for receiving partially digested food from the stomach and further breaking it down with the help of enzymes from the pancreas and bile from the liver. The ileum is responsible for absorbing nutrients from the digested food and transferring them to the bloodstream.
4. Structure: The duodenum has a thicker wall and more folds compared to the ileum. This is because the duodenum is involved in the mechanical breakdown of food, while the ileum is primarily involved in absorption.
5. Villi: The ileum has more villi (small finger-like projections) on its inner lining compared to the duodenum. This increases the surface area for absorption of nutrients in the ileum.
6. Blood supply: The duodenum receives blood supply from the superior mesenteric artery, while the ileum receives blood supply from the superior mesenteric artery and the ileocolic artery.
7. Hormones: The duodenum secretes hormones such as secretin and cholecystokinin, which help in the regulation of digestion and absorption. The ileum also secretes hormones such as enteroglucagon and motilin, which help in the regulation of digestion and motility.
2. Length: The duodenum is shorter in length compared to the ileum. The duodenum is approximately 25-30 cm long, while the ileum is approximately 3-4 meters long.
3. Function: The duodenum is responsible for receiving partially digested food from the stomach and further breaking it down with the help of enzymes from the pancreas and bile from the liver. The ileum is responsible for absorbing nutrients from the digested food and transferring them to the bloodstream.
4. Structure: The duodenum has a thicker wall and more folds compared to the ileum. This is because the duodenum is involved in the mechanical breakdown of food, while the ileum is primarily involved in absorption.
5. Villi: The ileum has more villi (small finger-like projections) on its inner lining compared to the duodenum. This increases the surface area for absorption of nutrients in the ileum.
6. Blood supply: The duodenum receives blood supply from the superior mesenteric artery, while the ileum receives blood supply from the superior mesenteric artery and the ileocolic artery.
7. Hormones: The duodenum secretes hormones such as secretin and cholecystokinin, which help in the regulation of digestion and absorption. The ileum also secretes hormones such as enteroglucagon and motilin, which help in the regulation of digestion and motility.
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Google Gemini AI
Jun 10
Ileum vs Duodenum
| Feature | Ileum | Duodenum |
|---|---|---|
| Location | Terminal portion of the small intestine, between the jejunum and large intestine | First portion of the small intestine, connecting the stomach to the jejunum |
| Length | About 3-4 meters (two-thirds of the small intestine) | About 25-30 centimeters (shortest portion of the small intestine) |
| Function | Absorption of nutrients (especially vitamin B12 and bile salts), water, and electrolytes | Chemical digestion of food received from the stomach; absorption of some nutrients (e.g., iron, calcium) |
| pH | Slightly alkaline (pH 7.5-8.0) | Slightly acidic (pH 5.0-6.5) |
| Enzymes | Lactase, sucrase, maltase, peptidases, enterokinase | Amylase, lipase, protease |
| Secretions | Contains villi and microvilli for increased surface area for absorption | Produces pancreatic juice (containing enzymes), bile (for fat digestion), and bicarbonate (for neutralizing stomach acid) |
| Blood supply | Supplied by the superior and inferior mesenteric arteries | Supplied by the celiac trunk |
| Innervation | Innervated by the autonomic nervous system | Innervated by the autonomic nervous system |
| Clinical Significance | Site of absorption disorders (e.g., vitamin B12 deficiency, Crohns disease) | Site of ulcers, pancreatitis, and gallstones |
| Additional Notes | Peyer's patches (lymphoid follicles) are present in the ileum | Contains Brunner's glands that secrete mucus to protect the lining from acid and enzymes |
| Feature | Ileum | Duodenum |
|---|---|---|
| Location | Terminal portion of the small intestine, between the jejunum and large intestine | First portion of the small intestine, connecting the stomach to the jejunum |
| Length | About 3-4 meters (two-thirds of the small intestine) | About 25-30 centimeters (shortest portion of the small intestine) |
| Function | Absorption of nutrients (especially vitamin B12 and bile salts), water, and electrolytes | Chemical digestion of food received from the stomach; absorption of some nutrients (e.g., iron, calcium) |
| pH | Slightly alkaline (pH 7.5-8.0) | Slightly acidic (pH 5.0-6.5) |
| Enzymes | Lactase, sucrase, maltase, peptidases, enterokinase | Amylase, lipase, protease |
| Secretions | Contains villi and microvilli for increased surface area for absorption | Produces pancreatic juice (containing enzymes), bile (for fat digestion), and bicarbonate (for neutralizing stomach acid) |
| Blood supply | Supplied by the superior and inferior mesenteric arteries | Supplied by the celiac trunk |
| Innervation | Innervated by the autonomic nervous system | Innervated by the autonomic nervous system |
| Clinical Significance | Site of absorption disorders (e.g., vitamin B12 deficiency, Crohns disease) | Site of ulcers, pancreatitis, and gallstones |
| Additional Notes | Peyer's patches (lymphoid follicles) are present in the ileum | Contains Brunner's glands that secrete mucus to protect the lining from acid and enzymes |
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