The die hard is part of the digestive system. It lies just at a lower place the diaphragm (the sheet of muscle just under your lungs). The realise of the stomach is connected to the oesophagus (foodpipe). The other end of the stomach is connected to the first part of the small bowel, the duodenum.
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The stomach has leash main parts. The top is called the fundus. The middle is called the body of the stomach. The bottom is called the antrum or pylorus. There is a valve called a sphincter at several(prenominal)ly end of the stomach. The valve between the oesophagus and the top of the stomach is called the cardiac sphincter. The valve between the bottom of the stomach and the duodenum is called the pyloric sphincter. The stomach does several different jobs.
How the stomach mixes and sunders down food
The stomach is a sizeable bag. Its main job is to mix up the food that is eaten and gravel breaking it down so that it rear be slowly digested. When food enters the stomach, the muscles of the stomach wall bug out powerful contractions, which decimate over the stomach in waves. These muscle contractions mix up the food and break it down until it is a thick liquid. This makes digestion in the duodenum easier.
Beginning the digestion of proteins
The lining of the stomach contains glands, which make and release (secrete) the stomach juices. The stomach juices contain an acetous and a digestive enzyme called pepsin. These begin to flow as soon as we see or smell food, well before food even enters the stomach. The enzyme starts to break down (digest) proteins in the food so that the body can absorb them. The acid is needed for the enzyme to work properly. It also helps to wipe out bacteria that might be in the food and so helps to cheer against food poisoning.
There are other glands in the stomach lining that make thick mucus. This mucus helps to protect the stomach lining from being damaged by the acid and protein digesting enzyme in the stomach juices....If you want to get a ample essay, order it on our website: Ordercustompaper.com
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