Summary of Gastric motility and secretions
The gastric mucosa is responsible for secreting a concoction referred to as gastric juice, which contains four ingredients. The only essential component is intrinsic factor, which is required to absorb vitamin B12 in the ileum. The hydrochloric acid and pepsinogen are needed to begin the initial digestion of proteins. Finally, the mucus produced in the gastric pits protects the mucosa from the corrosive nature of hydrochloric acid and lubricates the stomach contents.
The motility of the stomach plays three important roles in digestion. The contractions of the stomach accommodate its filling, aid in its emptying, and also knead foodstuffs into smaller particles. After gastric secretions properly digest stomach contents into chyme, gastric motility plays a large role in the hormonally-regulated emptying process.
Flashcards on Gastric motility and secretions
Gastric motility and secretions
Intrinsic factor is required to absorb vitamin in the ileum.