The On The Processing Of Swallowing

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

3) Once a bolus of food has been formed in the mouth, it is passed by the tongue and jaws to the

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* The nervous phase = this is where the presence of the food within the mouth and the action of swallowing resulted in the reflex stimulation of the mucus cells so that the gastric juice can be released.

Involuntary pharyngeal: stage begins as the bolus passes into the oropharynx - receptors send impulses to the deglutition center in the medulla and pons. Returning impulses cause the soft palate to move superiorly and posteriorly to close the nasopharynx. The epiglottis moves slightly inferiorly to close the glottis.

Trace and discuss the complete movement of a bolus of food entering and exiting the human via the digestive system.

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.

Once again we have been miniaturized in the submarine to continue the fantastic voyage of the digestive system. We will be touring a 55-year-old male. The host will be having a hamburger, French fries, and a root beer. We will be tracing lunch through the digestion process. Digestion is the process of turning the food that is ate into energy needed to survive and involves creating waste to be eliminated. (Mohan, 2010). The digestive tract is a long twisting tube that starts at the mouth and ends at the anus, called the alimentary canal. The wall of this tube is fashioned of four layers of tissue. The layers are listed from the inside coat to the outside coat: mucosa or mucus membrane, submucosa, muscularis, and serosa. The hollow space

Unlike human saliva, this mucus does not contain digestive enzymes, and only purpose is to aid the process of swallowing. The food then progresses into the pharynx, where the gill clefts are located. The pharynx acts as a passageway between the mouth and the oesophagus. Constructed of two layers of non-striated muscle, the oesophagus carries the food through to the gizzard, making use of mucus cells which assist in this process. Digestion begins in the gizzard, as it is a muscular modification of the first section of the stomach. The gizzard grinds coarse foods into smaller pieces, and secretes digestive enzymes into the

The buccal cavity is the entrance of the digestive system. It surrounded by the cheeks and is formed by both soft and hard plate, teeth and tongue. The main function of the buccal cavity it to break down food in to small boluses and allow it to be swallowed for digestion to take place (Kent, 2013).

The food then travels through the pharynx, throat, which is a funnel-shape tube connected to the back of the mouth. It passes the food from the mouth to the esophagus. The pharynx has 2 different functions and is also apart of the respiratory system. It has a large piece of cartilage, epiglottis. When swallowing, the epiglottis folds down over the larynx. If there were no epiglottis, the food would travel through the larynx, the windpipe.

I chose the oral cavity to describe for this discussion board. The oral cavity ingests, chews, and swallows the food so that it may enter our bodies. The oral cavity is the place where digestion begins. Before it goes anywhere in the body it has to enter our mouths first so that it may be mechanically broken down with the help of our teeth and saliva. Saliva contains digestive enzymes that help break down the food particles so that it's easier for us to swallow. Hanging at the back of the throat is the uvula which is there to serve for more than one purpose. The first purpose being it has a role in speech production, and the second one being the gag reflex. The reflex is stimulated when food enters the throat without swallowing. This prevents

The digestion starts here as soon as you take a bite of your food. By chewing your food it breaks the food into pieces so that is easy to digest, and the saliva mixes with food to begin the process of breaking it down into a form that your body can take. The throat also known as the (pharynx) is the next stop and from here; the food goes to the esophagus or swallowing tube. The esophagus is a muscular tube extending from the pharynx to the stomach. By means of a series of contractions, called peristalsis, the esophagus delivers food to the stomach.

Inside your mouth is what is known as your tongue and it has the job of pushing around your food while you chew, in order to help out with the process. Once you have completely dissolved the food and are prepared to swallow what is at this point known as bolus, your tongue pushes it to the back of your throat and into the opening of your esophagus.