What are stomach give two function ?
Answers
Answer:
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Explanation:
The stomach secretes acid and enzymes that digest food. Ridges of muscle tissue called rugae line the stomach. The stomach muscles contract periodically, churning food to enhance digestion. The pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.
Explanation:
The stomach has 3 main functions:
temporary storage for food, which passes from the esophagus to the stomach where it is held for 2 hours or longer
mixing and breakdown of food by contraction and relaxation of the muscle layers in the stomach
digestion of food
Structure
The stomach is part of the digestive system and is connected to the:
esophagus – a tube-like organ that connects the mouth and throat to the stomach. The area where the esophagus joins the stomach is called the gastroesophageal (GE) junction.
small intestine (small bowel) – a long tube-like organ that extends from the stomach to the colon (large intestine or large bowel). The first part of the small intestine is called the duodenum, and it is this part that is connected to the stomach.
The stomach is surrounded by a large number of lymph nodes.
Regions of the stomach
The stomach is divided into 5 regions:
The cardia is the first part of the stomach below the esophagus. It contains the cardiac sphincter, which is a thin ring of muscle that helps to prevent stomach contents from going back up into the esophagus.
The fundus is the rounded area that lies to the left of the cardia and below the diaphragm.
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. It is sometimes called the pyloric antrum.
The pylorus is the part of the stomach that connects to the small intestine. This region includes the pyloric sphincter, which is a thick ring of muscle that acts as a valve to control the emptying of stomach contents (chyme) into the duodenum (first part of the small intestine). The pyloric sphincter also prevents the contents of the duodenum from going back into the stomach.