Peristaltic Digestion Research Paper

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.

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

The route of the passage of food through the entire digestive tract. Food first enters the body by the mouth and is broken down into small pieces by the teeth as we chew. As we swallow the food goes down the esophagus and enters the stomach. In the stomach food is mixed with digestive enzymes, and then is pushed down to the small intestine. After the nutrients is absorb through the intestine walls, muscles push the waste into the large intestine. There waste is changed into stool then moves to the rectum until it pushes out of the body during a bowel movement.

As the pizza enters the mouth it is broken down into smaller particles by the teeth so that digestion can

The pharynx plays a major role for both the respiratory system and the digestive system as it has a flap tissue called “epiglottis” that will either guide air to the larynx into the lungs or it will send the food into the esophagus (Taylor). The esophagus, a muscular tube, connects both the pharynx and the stomach. The food that has been swallowed will go through a series of contractions called, “peristalsis,” where the esophagus is pushing food down into the stomach (Robinson). Before entering the stomach, there is an area in the esophagus called “lower esophageal sphincter” (Taylor). It is a muscle that prevents the food already in the stomach from returning back into the esophagus

At that very moment your food enters your mouth the digestion process starts. Chewing is the mechanical digestion process that breaks your food into smaller pieces that are easier to digest. While in your mouth saliva secreted from the salivary glands, which is the chemical digestion, is mixed with your food to begin the process of breaking down the food into a simpler form your body can use and absorb. During this chemical digestion there are three types of saliva produced from the different types of food.

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

Digestion begins with the process of mastication; food enters the mouth and the teeth begin to crush and grind the food into smaller pieces to form a bolus. Saliva is secreted from nearby salivary glands, which not only moistens food for easier swallowing, but also begins chemical digestion. Swallowing (deglutition) occurs next; at the beginning of a swallow the tongue voluntarily pushes the bolus upwards against the palate and backwards towards the pharynx. Involuntary reflexes are then initiated in order to prevent food from entering the respiratory tract; the uvula closes off the nasal cavity and the epiglottis covers the glottis and seals off the larynx. As the bolus approaches the esophagus the upper esophageal sphincter (UES) relaxes

Your epiglottis, a flap of tissue, covers up your trachea, the tube that connects your lungs to your nostrils and mouth. After the epiglottis covers up the trachea the food goes down the other tube which is called the oesophagus. The oesophagus is the muscular tube that connects your mouth to your stomach. Now, this food does not just magically fall down your oesophagus. Smooth muscle contractions, known as peristalsis, are pushing your food down your oesophagus.

The digestive system is a group of organs working together to convert food into energy and basic nutrients to feed the entire body. Food passes through a long tube inside the body known as the alimentary canal or the gastrointestinal tract (GI tract). In the mouth is chemical digestion due to the enzymes in the saliva known as amylase (Manley, 83). Peristalsis occurs in the esophagus (phagus = eat) and all throughout the G.I. tract. The smooth muscle tissues contract pushing the food (bolus) down toward the stomach in rhythmic contractions. The epiglottis is a flap that has to close when we eat in order to prevent the food from entering the trachea. At times when we talk or laugh while we eat the epiglottis does not have time to close and we choke (Manley, 83).

How the process of human digestion works is it starts with your mouth, the digestion starts as soon you take your first bite of your meal. When you chew it helps the process by making it easier for the food to digest. Also the saliva mixes with the food so that it can form it into something that the body can absorb and use. The next place the food goes is the pharynx (throat), then the esophagus or swallowing tube. The esophagus gets the food from the throat to the stomach. After the stomach is the small intestine it continues the breaking down process of the food by using enzymes released by the pancreas and bile from the liver. There are 3 other organs that help the small intestine break down the food we eat. They are pancreas, liver, and

Fight or flight is a response to adrenaline. Adrenaline is a protein created in your cells as a reaction to a stimulant. This stimulant can be someone jumping at you from behind a door, or it can be quick decision making. Your brain responds accordingly to the stimulus. If

| The stomach digests and stores the food we ingest. It breaks down the food into a liquidly mixture called “chyme” and this fluid is then slowly released into the small intestines.

6. Locate the small intestine which is a slender coiled tube that receives partially digested food from the stomach via the pyloric sphincter. The term “small” refers to its diameter, not its length. It consists of three sections: duodenum, ileum, and jejunum. The small intestine leads to the cecum (also spelled caecum, latin term for “blind”). Observe that the small intestine is not loose in the abdominal cavity but is held in place by the mesentery. Check and look for veins and arteries in the clear mesentery; they transport nutrients.

The digestive system is a very intricate system of enzymes and other chemicals that work together to help break up our food into substances that our bodies can absorb and use. To explain it all a little better we will start from the beginning, the mouth. As we take food (Starch, protein, lipids) into our mouths we start the process with chewing which is a mechanical breakdown then salivary amylase which is in saliva combines with the chewed food. We then swallow forcing the food into the esophagus, where peristalsis the involuntary squeezing and relaxing of muscles propel food down to the stomach. When salivary amylase from the mouth reaches the stomach it starts to break down the carbohydrates into simple sugars. Once into the small intestine the chyme (the ball of food) then mixes with pancreatic amylase from the pancreas and bile from the liver. Further breakdown occurs when the chyme is mixed with “brush border enzymes.” After these things occur the broken down chemicals get absorbed along with water through the small intestine. Whatever is left gets pushed into the large intestine to where it will be expelled from the body.