Digestive System

Digestion begins in the mouth. Saliva begins the breakdown of food, and the teeth and tongue masticate the food to prepare it for passage through the esophagus and further digestion in the stomach.

Dysphagia is the medical term for difficulty swallowing.

The Esophagus is the long smoothe muscle tube that connects the Pharynx to the Stomach. It runs down the posterios of the Thorax (chest) until it reached the diaphragm where it passes through and joins imediately to the stomach. It is joied via a short section of the same tube called the Cardius. Within this section is the Cardial Sphincter which is present to stop acid from the stomach traveling back up into the esophagus.

The correct answer is stomach acid

Mechanical, of course.. If you experience your saliva deteriorating your food any time soon, let me know.

Actually, saliva is there to help break down carbohydrates. The teeth in the mouth also digest food mechanically. In other words, the mouth uses both chemical and mechanical digestion to break down food.

It ends at the small intestine. From the small intestines, the digested food enters the bloodstream through the intestinal walls, while the undigested food goes into the large intestine and comes out of our body as faeces.

the pepsin help the protein to digest and breaks into polypeptides

When you swallow your food it goes in your belly, once its Easier to move it goes into a tonal that's where it enters the vein's. The vein's bring the food, now blood thought the body. Actually it is moved by the movement of the blood call circulation.

Yes it does!! And allot.. Later on you can get a hole in your neck and would have to eat from there. Also it can be dangerous for your tonsils. You would have to take a surgery.... The disestive system can also be damaged allot on what you get into your body...

The 3 main purposes of the digestive tract are: digest, absorb and eliminate. It digests food, absorbs the nutrients and eliminates the wastes.

Mechanical digestion is the actual physical break down of food into smaller pieces. One example of this is mastication (chewing) which occurs in the mouth by the teeth, which act to cut and grind food into smaller pieces. This makes them easier to later digest as it increases the SA of the food molecules. A certain type of food is made of lots of different chemicals but certain chemicals are found in the center. The chewing breaks it apart and exposes these chemicals so that they can be broken down quicker/easier. Another form of mechanical digestion is peristalsis; succesive contractions of muscles in the alimentary canal which form a wave of constriction that moves food along. In the stomach, there are three layers of muscle (which is unique as the rest of the alimentary canal only has 2). It has longatudinal, circular and oblique muscle which together contract and relax to form the churning motion which mixes food around. This aids in digestion as it slightly breaks up the food and also increases the contact the food has with enzymes and acids in the gastric juice. Bile salts (which are found in bile secreted from the liver) also act to emulsify large fat globules into smaller fat droplets. Its sort of like how detergent works and it breaks up all molecules and then puts a 'soapy' shield around them so they cant join back together. This increases the SA of the molecule of fat so that enzymes (particulary pancreatic lipase) can act on it and break it down to smaller, simpler forms are body can absorb. Chemical digestion on the other hand, is the chemical break down of foods into smaller pieces. An example of this is how enzymes break them down. In particular, the enzyme salivary amylase is found in our saliva which acts to break down starch into simpler forms (polysaccharides --> dissaccharides). Another form of this digestion is how the HCl acid in the stomach helps to break down food and destroy any microorganisms that accompanied the food.

The gall bladder and the pancreas is the correct answer. Some say the liver and the pancreas, but actually the liver produces the bile, but it is mostly stored in the gall bladder which secretes it into the duodenum, so the liver does not directly secrete the bile into the small intestine.

In some cases people do have prophylactic appendectomies. (Where the appendix is removed just in case something goes wrong with it in the future). However, I have only ever heard of this being performed in a very niche group of patients - very ill, learning disabled children, who are generally immobile and not able to articulate their wishes to others (i.e are mute and not capable of any form of sign language). It is in these instances that a prophylactic appendectomy is actually quite a reasonable option - since the child cannot articulate that they feel ill/which bit is painful, the delay this may cause in finding and treating appendicitis could prove fatal. Prophylactic appendectomy negates this scenario.

The digestive system the esophagus. Food goes from your mouth and goes down your esophagus then to the stomach blood goes around the food and the liver takes what the blood absorbed down

since a digestive enzymes is a cell that eats away fat it should be coverd in a membrane because it does not need bacteria to run threw it. and incase you dont know what a membane is, it is a cell wall that keeps away bacteria,protects the cell itself and keeps away bacteria.

The pancreas produces a mixture of enzymes which pour through a duct into the small intestine. The mixture is called pancreatic juice and contains trypsinogen and amylase amongst other things.

There are several common diseases of the digestive system. A few are celiac disease, irritable bowel syndrome, inflammatory bowel disease, Gastroesophageal Reflux Disease (GERD), and Gastroparesis.

Metabolism of protein has different pathways both anabolic and catabolic. The most common unit known for protein is known as Amino Acid(AA). AAs might end up being part of the muscles, organs in the body, enzymes for other metabolic reactions and during starvation - source of energy.

The digestive organ that is considered the primary organ of digestion is the small intestine but more specifically it is the duodenum of the small intestine. This is the region directly after the stomach and is approximately 25 cm long. The small intestine absorbs nutrients and large intestine absorbs water.

Frog's digestive systems have no villi, while human's digestive systems do.

Chemical and mechanical ingestion take place in the mouth. Chemical and mechanical digestion also take place in the stomach. Chemical digestion takes place in the small intestine.
Ingestion, digestion then absorption.
In the mouth, both chemical digestion and mechanical digestion happen. The mechanical part is your teeth crushing the food into smaller pieces. The chemical part is when the salivary glands give off a special fluid that contains enzymes. When food enters the stomach, an enzyme is released that helps to digest food chemicaly. The muscles in the stomach also digest food mechanicly. Lastly, the small intestine completes the chemical and mechanical digestion of food. The small intestine takes out all the useful matirial and sends it to the cells as tiny molecules that the cells use in cellular resparation.Baisicly, they all use chemical and mechanical digestion.

A thin epithelium and a large blood supply. This is related to the fact that the job of both is to move materials into the blood.

Food is digested by digestive enzymes in your digestive system. The first digestive enzyme is called amylase and it is found in you mouth, in other words your saliva, this enzyme breaks down carbohydrates/ sugars. Then your food is churned with your teeth and becomes a bolus ( a ball of food), that then travels down to the stomach through methods of peristalsis. The food enters the stomach upon passage through the cardiac orifice, also known as the esophageal sphincter. In the stomach, food is further broken apart through a process of heuristic churning and is thoroughly mixed with a digestive fluid, composed chiefly of hydrochloric acid, and other digestive enzymes to further denature proteins. The parietal cells of the stomach also secrete a compound, intrinsic factor which is essential in the absorption of vitamin B-12. As the acidic level changes in the small intestines, more enzymes are activated to split apart the molecular structure of the various nutrients so they may be absorbed into the circulatory or lymphatic systems. Absorption is when smaller molecules, such as glucose or alcohol, pass through the membrane of the stomach directly into the blood stream.After being processed in the stomach, food is passed to the small intestine via the pyloric sphincter. This is where most of the digestive process occurs as chyme enters the first 10 inches (25 cm) of the small intestine, the duodenum. Here it is further mixed with 3 different liquids: 1. bile (which helps aid in fat digestion, otherwise known as emulsification) (Bile also contains pigments that are by-products of red blood cell destruction in the liver; these bile pigments are eliminated from the body with the feces.) 2. pancreatic juice and enzymes, (made by the pancreas) 3. intestinal enzymes of the alkaline mucosal membranes. The enzymes include: maltase, lactase and sucrase, to process sugars. Trypsin and chymotrypsin are other enzymes added in the small intestine. Most nutrient absorption takes place in the small intestine. The nutrients pass through the small intestine's wall, which contains small, finger-like structures called villi. The blood, which has absorbed nutrients, is carried away from the small intestine via the hepatic portal vein and goes to the liver for filtering, removal of toxins, and nutrient processing. The primary activity here is regulation of blood glucose levels through a process of temporary storage of excess glucose that is converted in the liver to glycogen in direct response to the hormone insulin. Between meals, when blood glucose levels begin to drop, the glycogen is converted back to glucose in response to the hormone glucagon.