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We take food through the mouth, digest and utilise it.
The food passes through a continuous canal which
begins at the buccal cavity ends at the anus. The canal can be divided into various compartments: (1) Buccal cavity (2) Oesophagus (3) Stomach (4) Small intestine (5) large intestine (6) rectum (7) anus These parts together form the alimentary canal The mouth or buccal cavity functions as the starting point of the digestive system. The buccal cavity begins the digestion process by chewing the food into small portions and making easier to travel down the esophagus. The buccal cavity is also a tool in communication, since we use it to form sounds and words. The buccal cavity is a part of the body also known as the mouth.. Used both for speaking and as part of digestion The function of the salivary glands is to make saliva and help the bolus (soft mass of chewed food) go down the esophagus easily. Saliva contains enzymes which help break down food to a form which the body can use. this is in it's simplest form, it's a tube running from the throat to the stomach. The tube that connects the pharynx (throat) with the stomach. The esophagus lies between the trachea (windpipe) and the spine. It passes down the neck, pierces the diaphragm just to the left of the midline, and joins the cardiac (upper) end of the stomach. In an adult, the esophagus is about 25 centimeters (10 inches) long. When a person swallows, the muscular walls of the esophagus contract to push food down into the stomach.. Glands in the lining of the esophagus produce mucus, which keeps the passageway moist and facilitates swallowing. Food is passed through the esophagus by using the process of peristalsis. Specifically, it connects the pharynx, which is the body cavity that is common to the digestive factory and respiratory system with the stomach, where the second stage of digestion is initiated. . The stomach's main function is digestion. It does this by: Storing the food we eat. Breaking down the food into a liquidly mixture called chyme. Mixing enzymes which is are chemicals that break down food. Slowly empties that liquidly mixture into the small intestine.
The stomach uses pepsin (enzyme) and peptidase
(another enzyme) to break down proteins in your food. The acid released by the stomach doesn't break down food it only provides a good environment for the enzymes to work in. By this point the food is mushy and the stomach then passes this mixture on to the small intestine which will further break down the food. The stomach mixed the food with stomach acid to break it down and digest it. The small intestine is a long tube that is about 1 1/2 inches around and if you stretched it out it would about 22 feet long. The small intestine has the important job of breaking down the food mixture so your body can absorb all the nutrients it needs from food - vitamins, minerals, proteins, carbohydrates, and fats.
The small intestine can't break down food for its
nutrients by itself - it gets help from three other parts of the digestive system. These parts are the pancreas, the liver, and the gallbladder. They are not part of the digestive tract itself, but they help out by sending different juices to the small intestine. It takes about three hours for the food to become very thin and watery. Lining the small intestine are millions of fingers called villi. These absorb the chemicals that we need from the food into the body and pass through the wall of the small intestine and into the blood. So now the eaten apple can really get used by your body The large intestine is the thick, lower end of the digestive system, containing the appendix, colon and rectum. Its principle function is to reabsorb water and maintains the fluid balance of the body. Certain vitamins are also taken in through the large intestinal wall. Further down the intestine, in the rectum, faeces are stored as waste before it is eliminated. Another function is to process undigestible material (fibre), which makes up the bulk of the waste products. The food after digestion is in a liquid form and once it enters the large intestine, the large intestine tends to absorb all the water to give some consistency to the stools. So the main function of large intestine (colon) is The rectum is a muscular ring that is at the end of the large intestine. Its function is to keep the intestine sealed shut until the need to pass feces arises. When that need arises it assists in the moving of the feces out of the body. The main function of the rectum is to act as a temporary storage site for fecal matter before it is eliminated from the body through the anal canal. As the food you eat passes through the digestive system, it is broken down and nutrients are absorbed in the stomach, small and large intestines. Fecal matter, which includes digestive juices, bacteria and fiber, continues to move into the lower portion of the large intestine -- the rectum. The rectum holds the feces until you push it out of the body, through the anal canal, by having a bowel movement. The rectum is made up of muscular walls that are able to expand to hold fecal matter. With this expansion of the rectum, nerves in the area send signals to the brain that you need to have a bowel movement and muscles in and around the anal canal control the action. Adults and older children are able to control these muscles, relaxing them to release the feces from the rectum or contracting them to avoid having a bowel movement. The anus is the opening of the digestive tract to eliminate the leftover waste solids. Your food goes all through the digestive actions before reaching the anus to expel the rest that will not be used. The main function of the anus is to dispose of waste products out of the body. :) The anus is to eliminate the leftover waste solids in the body. It is that part of the alimentary canal which excretes the undigested food from our body in the form of liquid waste. to excrete solid body waste The gallbladder is a hollow system that sits just beneath the liver.In adults, the gallbladder measures approximately 8 centimetres (3.1 in) in length and 4 centimetres (1.6 in) in diameter when fully distended.It is divided into three sections: fundus, body, and neck. The neck tapers and connects to the biliary tree via the cystic duct, which then joins the common hepatic duct to become the common bile duct. At the neck of the gallbladder is a mucosal fold called Hartmann's pouch,where gallstones commonly get stuck. The angle of the gallbladder is located between the costal margin and the lateral margin of the rectus abdominis muscle. When food containing fat enters the digestive tract, it stimulates the secretion of cholecystokinin (CCK). In response to CCK, the adult human gallbladder, which stores about 50 millilitres (1.7 U.S. fl oz; 1.8 imp fl oz) of bile, releases its contents into the duodenum. The bile, originally produced in the liver, emulsifies fats in partly digested food. During storage in the gallbladder, bile becomes more concentrated which increases its potency and intensifies its effect on fats. The pancreas is a glandular organ in the digestive system and endocrine system of vertebrates. It is both an endocrine gland producing several important hormones, including insulin, glucagon, somatostatin, and pancreatic polypeptide, and a digestive organ, secreting pancreatic juice containing digestive enzymes that assist the absorption of nutrients and the digestion in the small intestine. These enzymes help to further break down the carbohydrates, proteins, and lipids in the chyme. The pancreas can also be thought of as having different functional components, the endocrine and exocrine parts. Tumors can arise in either part. However, the vast majority arise in the exocrine (also called non- endocrine) part. Since the parts have different normal functions, when tumors interfere with these functions, different kinds of symptoms will occur.