Essay about Journey Through the Digestive System

The esophagus receives food from the mouth after swallowing and then delivers it to the stomach. The stomach holds food which it is being mixed with enzymes which continue the process of breaking down the food into a useable form. When the contents of the stomach are processed they are released into the small intestine. In the small intestine food is broken down by enzymes released from the pancreas and bile from the liver, the food is moved through and mixed with digestive secretions. The small intestine is made up of three segments the duodenum, jejunum and the ileum, the jejunum and the ileum are mainly responsible from the absorption of nutrients in to the bloodstream. These contents start out semi-solid and end in a liquid form after passing through the organ. Water, bile, enzymes and mucous change its consistency, one the nutrients have been absorbed it then moves onto the large intestine. The large intestine connects to the rectum and is specialised in processing water so that emptying the bowels is easy.

Today, I want to talk about bananas. This familiar yellow fruits is nutritious, delicious, and good for you. But, most importantly, there are a trillion fun facts about it on the internet. Banana Fact: “Americans eat an average of 27 pounds of bananas per person every year, making them the most popular fruit in the U.S.” Banana fact: “Research shows that eating bananas may lower the risk of heart attacks and strokes, as well as decrease the risk of getting some cancers.” Banana fact: “Banana farms use extremely harmful pesticides including diazinon and chlorpyrifos, which when consumed can cause: diarrhea, nausea, vomiting, convulsions, and comas.” Banana fact: “Tortoises and manatees off the coast of Costa Rica are facing extinction partly due to the fact that pesticide runoff from banana plantations kills the algae on which they feed.” Now you might be thinking, those things aren’t really my problem, I’ve never gotten sick from a banana and tortoises aren’t doing bad, I saw one at the zoo once. Why is any of this important? And to that, allow me to read you this sweet native american quote Ms. Barber probably found on facebook, a few clicks away from my banana facts. "Treat the earth well. It was not given to you by your

The small intestine is where the completion of the digestion and absorption of nutrients happens. The small intestine is highly adapted for the absorption; villi and microvilli. The small intestine is the main site for lipid digestion. The pancreas secretes lipases which are special enzymes that digest fats after they have been mixed with bile.

The organs needed for the dissection from the digestive system contains the liver, stomach, the small and large intestines, also the tongue. The function of the liver is to clean and detoxify the blood but also to store vitamins and iron. The function of the stomach is to receive food from the esophagus and mix food with the gastric juices. Small intestines extend from the stomach to the large intestines. It is responsible for absorbing most of the nutrients into the bloodstream.

It’s a typical day. After school you get home and you are starving, but you just want a snack. “What should I eat?,” you ask yourself. Then, after looking through the cabinets for a few minutes, you find Cheetos and decide to eat a few. With just the presence of those Cheetos in your sight, the digestion process begins in your 9 meter long digestive tract.

Duodenum is the first section of the small intestine, this is where the first part of digestion is completed. Food is mixed with bile and enzymes both of which help break down the food. Jejunum is where the foods nutrients are absorbed.

Instead the pancreatic juice, which is the most important digestive juice, contains mainly water and enzymes such as: Amylase (breaks down carbohydrates/starch into glucose), Protease (breaks down proteins into amino acids) and Lipase which breaks down lipids (with the aid of bile) into triglycerides. It also contains sodium bicarbonate able to neutralize the hydrochloric acid present in the chyme. Through the lining of the small intestine I can also see numerous “brush border" enzymes which are further breaking down products of digestion into absorbable particles; these enzymes constitute the intestinal juice and particularly digest polysaccharides transforming them in monosaccharaides (Maltase, Sucrase and Lactase), (Patton & Thibodeau, 2008). The chyme now is entering in the jejunum (the second portion of the small intestine) where digestion continues and absorption begins. I notice that the jejunum contains numerous villi but less Brunner's glands, it also presents many large circular folds called plicae circulares (Pansky, 2007). These circular folds increase the surface area for nutrient absorption; in fact the absorption of the majority of nutrients takes place here. Now the chyme and I are entering into the ileum which is the final and longest segment of the small intestine. This tract of the

There aren’t many compartments the food has to travel through. Food travels down the esophagus into the stomach, where it is met by stomach acid and food is broken down and passed through the small and large intestine, nutrients are absorbed, and the waste is

Food is digested by being broken down, by a variety of enzymes, into useful nutrients, which are transported around the body to places where they can be of use, and into waste products, which are excreted from the body. The digestive system is made up of a number of organs, oesophagus, stomach, liver, pancreas, gallbladder, and small and large intestines, these are then separated into the digestive tract and the digestive organs. The digestive tract is, essentially, a single continuous tube that begins at the mouth and ends at the anus, in a fully grown adult it is approximately seven metres long. Food travels through the digestive tract and the digestive organs produce the enzymes and chemicals that are responsible for

After the food has gone through the stomach, it moves onto the small intestine. Food moves through it between 30 minutes to an hour. It is made up of three parts. The Duodenum, Jejunum and the Ileum. The Duodenum is the start of the small intestine. This is where bile, salts (from the liver) and pancreatic enzymes are to start to break down carbohydrates, proteins and fats. Due to horses not having a gall bladder the bile goes straight into the small intestine. The bile is important at reducing the acid from the

The abdominal cavity which contains the stomach, most of the large intestine, the small intestine, the gallbladder, spleen, kidney and liver. The small intestine is very important and its job is to digest food and also take nutrients from food to help give back to the body. The gallbladder is a small storage organ also needed in digestion and holds bile products produced by the liver until needed for digesting fatty foods. The kidney is also vital because it helps aid in essential processes such as regulating blood pressure. The liver is very vital and performs multiple critical functions to keep the body pure of toxins and harmful substances. Without a healthy liver, a person cannot survive. Then the pelvic cavity which will contain also portions of the large intestine, reproductive organs, and the urinary bladder. The large intestine is also known for helping during digestion by taking undigested food and absorbing as much water as it can and expels the waste. The reproductive organs play a vital role in the survival of our species. Lastly, the urinary bladder functions as a storage vessel. It is one of the most elastic organs and is able to increase its volume

The stomach is an expandable muscular sac that is capable of holding 2-4 liters of food and liquids and breaks them down with the use of pepsinogen, an inactive form pepsin, a protein-digesting enzyme. If the stomach was damaged or dysfunctional, then it would be harder to gradually release food into the small intestine at a rate suitable for proper digestion and absorption and to digest the food because it is not as small or digested because the stomach also assists in the mechanical and chemical breakdown of the food as well as the killing of harmful bacteria due to the high acidic environment due to the hydrochloric acid. (Audesirk, T., & Audesirk, G. (1999). Retrieved November 21, 2015 from Chapter 29: Nutrition and Digestion. In Biology:

It also helps to improve our bowel movements. A great source of fiber, eating bananas is a better option than taking laxatives to treat constipation. Bananas are also rich in fructo-oligosaccharides (FOS), which is another essential element of digestion. It is a prebiotic that feeds good bacteria living inside your digestive system. These bacteria works to help us efficiently absorb nutrients. If you are a person who gets constipated easily, then you gotta love bananas.

The bile moves into the gallbladder via tiny tubes. The bile is stored in the gallbladder and waits, becoming concentrated, for the signal to be released into the duodenum aiding in digestion. Without bile, the body could not digest fats, as fats do not absorb into water. The bile acts as a detergent and allows the two to mix.

Drug absorption and metabolism are very complicated processes that involve many physiological and physicochemical factors. Adequate information about the processes determining the oral F of a drug is essential for a successful drug development process. In the recent years, our knowledge about the expression of drug-metabolizing enzymes in the intestinal wall has expanded. In addition, the availability of in vitro and in vivo data has clearly demonstrated the significant contribution of intestinal metabolism in mediating the extent of first-pass elimination and DDIs. PBPK models provide an effective and reliable tool to evaluate the role of intestinal first-pass metabolism in the prediction of potential DDIs. The use and