What is the expanded portion of the stomach?

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What is the expanded portion of the stomach?

The human stomach is subdivided into four regions: the fundus, an expanded area curving up above the cardiac opening (the opening from the stomach into the esophagus); the body, or intermediate region, the central and largest portion; the antrum, the lowermost, somewhat funnel-shaped portion of the stomach; and the …

What are the parts of stomach?

There are four main regions in the stomach: the cardia, fundus, body, and pylorus (Figure 23.4. 1). The cardia (or cardiac region) is the point where the esophagus connects to the stomach and through which food passes into the stomach.

Is the stomach expandable?

The stomach is an expandable, muscular bag, and it keeps swallowed food inside it by contracting the muscular pyloric sphincter. Food can stay in the stomach for 2 hours or more.

What are the four parts of the stomach?

The stomach is a ‘j’-shaped organ, with two openings- the oesophageal and the duodenal- and four regions- the cardia, fundus, body and pylorus.

What is the largest part of the stomach?

The body is the largest and main part of the stomach. This is where food is mixed and starts to break down. The antrum is the lower part of the stomach. The antrum holds the broken-down food until it is ready to be released into the small intestine.

What are 3 parts of the stomach?

Regions of the stomach

  • The cardia is the first part of the stomach below the esophagus.
  • The fundus is the rounded area that lies to the left of the cardia and below the.
  • The body is the largest and main part of the stomach.
  • The antrum is the lower part of the stomach.

What are the 7 functions of the stomach?

  • Gastric pits.
  • Secretion of gastric juice.
  • Protein digestion.
  • Fat digestion.
  • Formation of chyme.
  • Passage of chyme into the duodenum.
  • Food absorption.
  • Hunger and satiety.

Where is the stomach lining located?

The stomach wall The wall of the stomach has four layers: The mucosa is the inner layer (stomach lining). It contains glands that produce enzymes and acid, which help digest food. The submucosa attaches the mucosa to the muscularis.

What is the main part of the stomach?

Located inferior to the diaphragm, above and to the left of the cardia, is the dome-shaped fundus. Below the fundus is the body, the main part of the stomach. The funnel-shaped pylorus connects the stomach to the duodenum. The wider end of the funnel, the pyloric antrum, connects to the body of the stomach.

What are the four functions of the stomach?

The core function of the human stomach is as an aid to digestion. The four key components of gastric digestive function are its function as a reservoir, acid secretion, enzyme secretion and its role in gastrointestinal motility.