Question

Give a rundown of the events that occur in the gastric functions.

Answer 1

Gastric Juice:

1. The mix of hydrochloric acid (HCl), lipase, and pepsin is found in gastric juice.
2. All vertebrates have acidic stomach juice, which has the primary purpose of inactivating germs.
3. Exocrine secretions such as acid and pepsin, are under the direction of the endocrine release of hormones that also coordinate intestinal movement.
4. It initiates digestion in the stomach.
5. Ingested food is also stored and mechanically disrupted in the stomach.

Functions:

1. In the cephalic phase, impulses from the vagus nerve initiate stomach secretion.
2. In the gastrointestinal phase, the physical presence of food causes the release of pepsinogen and ${\mathrm{H}}^{+}$.
3. The chyme is churned and liquefied as a result of muscular contraction, which puts pressure on the pyloric sphincter.
4. Gastrin is released into the bloodstream by pylorus cells, which reinforces other stimuli.
5. For secretion and motility, it operates as a positive feedback mechanism.
6. When the acid chyme enters the duodenum, the intestinal phase begins.
7. Lower pH inhibits gastrin production, resulting in the release of enterogastrones such as GIP into the bloodstream. Enterogastric reflexes arise as a result of this.