Essay on Btec Level 3 Health and Social Care Unit 4 P4

The digestive system absorbs the minerals and nutrients from the foods that have been eaten. The break down of food beings in the mouth, where the

Digestion starts in mouth and it is going through several steps. Teeth which are a Mechanical digestion start tearing and crushing the food down into small pieces so that the food will smoothly run down our throat. The salivary glands are located underneath the back of our tongues and that’s what is creating our saliva. The saliva is the Chemical Digestion is helping soften the food in the mouth so it is easy to swallow. Also saliva is the first out of several chemicals that is breaking the food into smaller bits. The tongue is the muscle that works with the food and saliva to form something similar to balls that can be swallowed. Also tongue contains taste buds so that we know if the food is salt, sweet, sour or bitter. Esophangus is a simple transportation tube that is joining the throat with stomach. When swallowing we are closing a trap door in our throats called the epiglottis. By closing this trap we are preventing the food prom going to trachea and into our lungs. Also Food moves down the esophangus using muscles not gravity. Stomach is the first stop after the Esophangus. When the food gets into stomach the stomach uses chemicals to try to make the food smaller. These chemicals are called gastric juices and they include hydrochloric acid and enzymes. (Enzymes are

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

When we want to eat, the brain sends a signal to the stomach that food is on the way. Stomach muscles then relax and prepare your stomach that will be filled with food. When food passes through the digestive tract, the stomach returns to its original size.

The stomach mixes the highly acidic gastric juices and enzymes with the chyme to prepare the nutrients absorption in the small intestine. The food does not stay in the pancreas, liver, or gallbladder but simply passes by it. These digestive organs aid in the chemical digestion of chyme as it passes into the small intestine. After staying in the stomach four a few hours and passing by the pancreas, liver and gallbladder, it will go to the small intestine (Primal Pictures). Once the food is in the small intestine, it will take three to five hours from entry at the duodenum to exit from the ileum. The small intestine takes part in the further chemical digestion and absorption of the food. The nutrients from the Chinese food will pass through the wall of the small intestine and into the bloodstream so that the nutrients can spread throughout the rest of the body. The surface area for absorption will increase through tiny projections called villi. The unabsorbed portion of the bolus then enters the large intestine. Once the food remains have reached the large intestine it can take up anywhere between 10 hours to several

When carbohydrates go through the esophagus, mechanical digestion takes place by the use of peristalsis.

We start with the mouth, in the feature, I am chewing on a bit of bread from a sandwich, the sandwich softens up two distinct ways, mechanical and concoction absorption. Mechanically, teeth are utilized to bite sustenance into little pieces and blend it with salivation with the tongue's assistance. The tongue then sends this pounded up sandwich down the throat to the stomach. Synthetically, Salivary organs in the mouth produce spit, containing the protein amylase to separate starch, is blended with sustenance, making it gentler and smoother prepared for its adventure down to the stomach.

To discuss the regions of the digestive system, it seems more reasonable to start superiorly and work my way down. The digestive system as a whole can be broken down into two regions called the alimentary tract, and accessory organs (SEER, .n.d.) The Alimentary tract consists of the: mouth, pharynx, esophagus, stomach, small intestines, and large intestines. The accessory organs are there to aid the digestive system and are the: salivary glands, liver, gallbladder, and pancreas.

The gastrointestinal tract is a muscular tube lined by a unique layer of cells, called epithelium. This empty muscular tube begins from the oral cavity, proceeds through the pharynx, esophagus, stomach and intestines to the rectum and anus. There are different appendage organs that help the tract by emitting compounds to separate nourishment into its segment supplements. Subsequently the salivary glands, liver, pancreas and gall bladder have critical tasks in the digestive framework. Sustenance is pushed along the length of the gastrointestinal tract by peristaltic motions of the muscular walls. (“Gastrointestinal System,” 2016)

the duodenum and this process is called peristalsis, and is mixed with intestinal juice and pancreatic

The most expansive segment of the digestive tract is the stomach which is located between the end segment of the esophagus and the commencement of the small intestine. The stomach is composed of many layers of tissue and glands and is an essential part of the digestive system which is designed to convert food substances into usable form which enables the body to function properly by ensuring this is effectively converted into nutrients and energy which are circulated throughout the body.

In the large intestine – The digestion and absorption of proteins, fats and carbohydrates are essentially complete by the time the intestinal contents enter the colon. Only water, fiber and some minerals remain. Only certain fibers can be broken down by bacteria (chemical digestion).The colon's task is mostly to reabsorb water and minerals, leaving a paste of fiber and feces for excretion (mechanical) via rectum and anus.

The main functions of the digestive are taken in carbohydrates foods which enter the mouth is where it is chewed and mix with saliva which contains an enzyme called amylase. This enzyme breaks down the carbohydrates in to small molecules which are small sugars called glucose they move to the stomach. In the stomach there is enzyme which is called pepsin this enzyme is strong its function is to digest proteins when this is done the glucose goes on to the small intestine. The glucose then moves to the start of the small intestines which is called duodenum this part of the intestines function is two finish the first stage of digestion the food that comes from the stomach is mixed with enzymes that come from the pancreas and bile from the gallbladder these enzymes help to break down the glucose further. The glucose then moves into the middle part of the intestine which is called ileum this is where the glucose gets aborted into the villi which then gets the glucose into the bloodstream.

Digestion is the chemical breakdown of food into smaller components that are more easily absorbed. Digestion is a form of catabolism: a breakdown of large food molecules to smaller ones. When food enters into stomach, gastric juice starts protein digestion. Gastric juice mainly contains hydrochloric acid and pepsin. The pH value of hydrochloric in the stomach is 2, as the activity of pepsin is optimal, while it will lose its activity at pH 6.5 and above. However, pepsin will regain its activity at pH of 8. In the range of pH1 to pH6.5, pepsin will be most active at pH2, and starts to decrease its