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gastrointestinal

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by

Dulce Walldez

on 28 September 2012

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Transcript of gastrointestinal

The gastrointestinal tract consists of a hollow muscular tube starting from the oral cavity, where food enters the mouth, continuing through the pharynx, oesophagus, stomach and intestines to the rectum and anus, where food es expelled. GASTROINTESTINAL SYSTEM The primary purpose of the gastrointestinal tract is to break food down into nutrients, which can be absorbed into the body to privade energy. GASTROINTESTINAL SYSTEM the oral cavity or mouth es responsable for the intake of food. It is lined by a stratified squamous oral mucosa whit keratin covering those areas subject to significant abrasion, such as the tongue, hard palate and roof of the mouth. Oral cavity Salivary glands three pairs of salivary glands comminucate whit the oral cavity. salivation occurs in response to the taste, smell or even appearce of food. The oesophagus is a
muscular tube of approximately
25 cm
in legth and 2 cm in diameter.
The oesophagus fuctions
primaryly as a trasport
medium between compartments. Oesophagus Is a shaped expanded bag, located just left of the midline between the oesephagus and small intestine. This is where most gastric glands are located and where most mixing of the food occurs. Gastric contents are expelled into the proximal duocenum via the pyloric sphincter. Stomach 1- the short-tem storage of ingested food.
2- Mechanical breakdown of food by churning and mixing motions.
3- Chemical digestion of proteins by acids and enzymes.
4- Stomach acid kills bugs and germs.
5- Some absorption of substances such as alcohol. The stomach can hold up to 1.5 litles of material. The functions of the stomach include: The small intestine is composed of the duodenum, jejunum, and ileum.
It averages approximately 6m in length,
extending from the pyloric sphincter of the stomach
to the ileo-caecal valve separating the ileum from the caecum. Small Intestine Large Intestine The large intestine is horse-shoe shaped and extends around the small intestine like a frame. It consists of the appendix, caecum, ascending, transverse, descending and sigmoid colon, and the rectum. It has a length of approximately 1.5m and a width of 7.5cm. The liver is a large,
reddish-brown organ situated in the right upper
quadrant of the abdomen Liver Technical English Class TEAM

Heidi Winnikoff.
Magdalena Calzadias
Dulce Walldez.
Zulema Alvarez G. The gallbladder is a hollow,
pear shaped organ that sits in a depression
on the posterior
surface of the liver's right lobe. Gall Bladder The main functions of the gall bladder
are storage
and concentration of bile bile Bile is a thick fluid that contains enzymes
to help dissolve fat in the intestines All nutrients absorbed by the intestines
pass through the
liver and are processed before traveling
to the rest of the body. In the case of gastrointestinal disease or disorders, these functions
of the gastrointestinal tract are not achieved successfully. Wash hands with soap and water before eating and after
using the bathroom,
this will prevent the transfer of bacteria,
parasites and viruses. Thanks!!
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