When we pop a food into our mouth and chew with lower teeth performing all the motion, rising and falling at the rate of an inch a second. Gulp, and down the food goes, and now we rely on esophageal peristalsis, a 10 inch long organ of the digestive system that helps move food from the back of our throat to our stomach with a speed of ¾ inch per second. Once food has entered the esophagus, it doesn’t directly drop in our stomach in just a snap of a finger. Instead, the muscles in the walls of the esophagus move in a wavy way to slowly squeeze causing, the food flow in the esophagus, its speed. Splash — into the tummy. There, the food remains for an average of two to four
Describe peristaltic movement. Also called mixing waves pass over the stomach every 15 to 25 seconds.
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
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.
The digestive system of a pig is classified as monogastric or non-ruminant, which is having a stomach with only a single compartment, like humans. In addition, the digestive tract of the pig has five main parts, including the mouth, esophagus, stomach, and small and large intestines. Furthermore, the mechanical breakdown of the food begins upon the entrance of the mouth in the digestive tract. Basically, the food is grinded into smaller pieces by its teeth. Next, saliva is produced in the mouth, acting to moisten the small food particles, along with an enzyme that starts the digestion of the starch. Then, the food is pushed towards the esophagus with the help of the tongue. Primarily, the esophagus carries the food from the mouth to the stomach, being a tube, which is carried out with the help of a series of muscle contractions that push the food towards the stomach. Subsequently, after the first of the contractions, swallowing, has taken place, the cardiac valve, located at the end of the esophagus, prevents food from passing from the stomach back to the esophagus. Likewise, the stomach comes next in the digestive tract; it serves as a reaction chamber, adding chemicals to the food. Also, hydrochloric acid and enzymes help break down food into small particles of carbohydrates, protein, and fats. Additionally, some particles are absorbed into the bloodstream, from the stomach, while others cannot be absorbed by the stomach, being passed to the small intestine through the pyloric valve. Moreover, the small intestine aids
Gulp. Your favorite food, right in front of you. Mouth watering and eyes glued to the plate. A big inhale and the smell is even better than it looks. You just cannot wait to dive in and devour it, but how does one recognize what your favorite food is by just a sniff? Or what happens after you chew and swallow that meal? Mary Roach,“America’s funniest science writer”, will take you through the gates of the digestive system and explain everything one would ever want to know and more about what happens in the depths of the alimentary canal.
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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
The food enlarges the abdomen and this presses on the flat diaphragm. The muscle is inhibited from participating in
This report will discuss how esophageal cancer affects the esophagus. I will discuss how the cancer affects the normal operation of the esophagus, what causes esophageal cancer, how the cancer can be detected and how this cancer can be treated, I will conclude with a discussion of how common esophageal cancer is.
When we eat, food travels down the esophagus and passes through a flap (the lower esophageal sphincter) to drop into the stomach. This flap is only supposed to open to allow food to pass down or gas to pass up (a burp). It can also open when we need to regurgitate (throw up). If the opens to much or does not close properly, stomach acid may splash up,
According to Chabner, 2017, p. 145), “lower esophageal sphincter (LES) relaxes and shrinks and move food from the esophagus into the stomach.” Therefore, Acasia hyounggi (2010), mentions that the stomach mixes with complex nutrients and gastric juice to soup for digesting. After saving soup, it sends to duodenal. Then, absorb the first quarter settlement of alcohol in 30 minutes and dismantles protein and
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
into the larger lower part, reducing the amount of food the stomach can hold and slowing the
As soon as you swallow, this little epiglottis flops down and blocks the windpipe and the larynx. It closes it off like the lid of a trash can so that food has only one choice and that is to go down the esophagus. Now the opposite is true when we're not eating or we're not swallowing, and we're trying to breathe, the epiglottis opens up and this will allow air to pass into our respiratory tract. Now whenever food does get into our respiratory tract, sometimes if we're eating too fast and we're not giving ourselves time to swallow, then food can get lodged down in the larynx or trachea and what happens usually is we begin to cough. Coughing is basically just pushing a big puff of air through the respiratory tract, which will hopefully pop out or dislodge that food particle.
Peristalsis is a series of wave-like muscle contractions that moves food to different processing stations in the digestive tract. The process of peristalsis begins in the esophagus when a bolus of food is swallowed.