![Control of digestion in human Control of digestion in human](https://digitalteachers.co.ug/wp-content/uploads/2022/09/Bbosa-Science.png)
Control of digestion in human
- Ghrelin is produced in the stomach, and its function is to tell the brain that the body has to be fed. It increases appetite.
- Gastrin is produced in the stomach when it is stretched. It
- Stimulates the release of gastric juice rich in pepsin and hydrochloric acid.
- Stimulates of smooth muscle contraction in the stomach, small intestine, and large intestine, which increases gastric and intestinal motility.
- Relaxation of the pyloric sphincter, which promotes gastric emptying into the small intestine.
- Acidic pH levels reduce the levels of gastrin.
- Secretin is produced in the duodenum and
- stimulates the pancreas to produce alkaline secretions (rich in bicarbonate ions)
- slows the emptying of the stomach
- stimulates the liver to produce bile.
- Cholecystokinin (CCK) is produced in the duodenum.
- It reduces appetite,
- slows down the emptying of the stomach.
- stimulates the release of bile from the gall bladder.
- Peptide YY (PYY) is produced in the last part of the small intestine known as the ileum as well as parts of the large intestine. It plays a role in slowing down the passage of food along the gut, which increases the efficiency of digestion and nutrient absorption after a meal and inhibits appetite.
- Glucagon-like peptide 1 (GLP-1) is produced in the small intestine and colon and has multiple actions including inhibition of gastric emptying and appetite as well as the stimulation of insulin release.
- Motilin — stimulates the production of pepsin and speeds up peristalsis.
CATEGORIES General
TAGS Dr. Bbosa Science