Essay On Peristalsis

Swallowing is the movement of food from the mouth into the Esophagus. The esophagus secretes mucus and transports the food to the stomach via peristalsis.

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

Peristalsis is defined as a mixing movement, which results in food in small segments of the alimentary canal being mixed with digestive enzymes.

By 2 different types of contractions. Peristalsis and segmentation, the movements mix the bile in the small intestines with the chyme from the stomach.

Thirty seconds ago I was in my blueberry bush as a blueberry enjoying the sun, but now I am in the mouth of the human, in the process of being digested. The enzymes in the saliva started to chemically digest me, at the same time I was being mechanically torn and crushed by all thirty two teeth. Teeth are used to break down large pieces of food into smaller pieces so it is easier to digest. I was now going down pharynx and moving my way into the oesophagus. I saw the epiglottis close up as I was being pushed down, in a way called peristalsis. Peristalsis is the contraction and relaxing of muscles which push food. I continue my way down the oesophagus and find myself in contact with the gastric juices found in the stomach. The gastric juices

It will take Matt and Maria about five to thirty seconds to chew their General Tso’s chicken and rice. Food remains in their oral cavity and pharynx for about only one minute (Primal Pictures). The oral cavity is where the initial phases of mechanical and chemical digestion begins. It helps sense the food being consumed by gaining information regarding taste, texture and temperature. The pharynx is a fibromuscular structure that connects the oral cavity with the esophagus. During this time the walls of the pharynx constrict to push the General Tso chicken and rice into the esophagus. The food then travels to the esophagus and is there for a short amount of time, around five to eight seconds (Primal Pictures). The esophagus is a continuation of the pharynx. Peristalsis

Normally, food moves through the digestive system by muscle contractions in the intestines. In people with IBS, the contractions are no not coordinated. The contractions may last for too long or not long enough. The contractions affect bowel movements and result in uncomfortable and painful symptoms. This also affects the ability of the colon to be able to absorb water and other nutrients from the food being digested.

Digestion is a multistep process that begins the moment you put a piece of food in your mouth or sip or drink.The mouth is the beginning of the digestive track,and in fact digestion starts here.When taking the first bite of food ,chewing breaks the food into pieces that are more easily digested,while saliva mixes with food to begin the process of breaking it down into a form your body can absorb and use.

The digestive system contains nutrients, water, and electrolytes that the body needs to maintain a healthy lifestyle. “The organs of this system ingest, and absorb food and eliminate the undigested remains as feces” (Human Anatomy and Physiology, 2012). The process of the digestive system first starts by eating food through the mouth. After the food has been eaten, it then breaks down into subunits, process called digestion. Next is the movement of the food along the GI tract so all functions can be fulfilled. Then the absorption of the nutrients in the GI tract are delivered to cells through the blood. The elimination of indigestible molecules is the last step in the process. The alimentary canal walls have four tunics (layers). “Each of these tunics has a predominant tissue type and a specific function in the digestive process” (Human Anatomy and Physiology, 2012). The mucosa is the innermost layer and is a “wet epithelial membrane abutting the alimentary canal lumen” (Human Anatomy and Physiology, 2012). The mucous membrane “consists of a surface epithelium, a lamina propia, and a muscularis mucosa” (Human Anatomy and Physiology, 2012). The

The upper one-third portion of the pharyngeal muscles (see Appendix B) begins the circular contraction, followed by the middle portion of the muscles, and finally the lowest third of the pharynx. The wave of pharyngeal contraction at a rate between 9 and 25 cm/s, depending on individual variation and bolus consistency (Shaw & Martino, 2013). As the bolus rapidly passes through pharynx, the sphincteric, uppermost portion of the esophagus relaxes due to the elevation of the larynx. The relaxation of the upper esophageal sphincter (UES) is exquisitely timed with the movement and pressure generated by the muscles of the pharynx to coordinate the transition of the bolus from the pharynx to the

The mouth is where the digestion first begins as firstly the scent of the food will travel to the nose causing the salivary glands in the mouth to produce saliva as there are three pairs that do this. As you are chewing the food with your teeth the food starts to get broken down more saliva is produced along with the breaking down. The secretion will be transferred into the mouth and the tongue as the salivary glands are causing it to do this. Also, the digestive juice contains an enzyme which is known as salivary amylase which now begins the digestion of carbohydrates as well as lubricating the mouth in order to help with the bolus formation.

This is a tube that connects the throat to the stomach and is the tunnel in which moves food from the mouth to the stomach. Through contracting and relaxing of the esophagus muscles, know as peristalsis your food is welcomed into the lower part of the esophagus, known as the esophageal sphincter. Here there is a valve that is normally closed but once food comes into contact with it, it opens and lets food into the stomach.

This process begins in the mouth - when we chew and swallow food and she, passing through the

The digestive systems starts as food begins to enter the oral cavity through the mouth. As digestion continues the tongue plays an important role by pushing broken down food from the secretions during the chemical reaction of salivary glands releasing amylase from mouth to the oropharynx. The oropharynx reactions with epiglottis, which a flap that closes during digestion to make sure food does not enter windpipe. The glottis is the opening that goes to lungs, if food enters the oropharynx it would make the epiglottis fold back whenever the glottis is closed food is allowed to go into the esophagus. There are two sphincters of the esophagus, the upper and lower esophageal sphincters. The upper esophagus is concluded of a buddle of muscles who

Food begins the journal through the mouth. Inside the mouth the saliva, teeth and tongue aid in the digestion of the food by chopping the food into small pieces which are then moisturised by the saliva to help the tongue and other muscle push the food into the pharynx ( throat)