Pepsin

aids digestion by creating the optimal pH for pepsin and gastric lipase and by stimulating pancreatic bicarbonate secretion. Acid secretion is initiated by food: the thought, smell, or taste of food effects vagal stimulation of the gastrin-secreting…

that it can be easily digested for the rest of your intestines which is the small and large intestines and it does this in a controlled and regulated manner. When the stomach releases acids and enzymes for the food to breakdown, the enzyme which is pepsin is has the responsibility for protein…

Summary: Barry James, a 67-year-old man presents to the hospital with a recent onset of diarrhea and weight loss; patient has a history of lactose intolerance, vitamin B12 deficiency and intermittent diarrheal episodes that last 1-2 days. Peripheral edema was noted on the physical examination, and the abdominal examination was negative for distention and organomegaly. Question: Describe the pathophysiology and clinical presentations associated with small intestine malabsorption. Generate:…

First step is ingested food is taken into the mouth where it is torn into smaller physical parts by the teeth. The salivary enzymes; amylase and lipase are activated beginning the chemical breakdown of food. Salivary amylase divides starch into smaller glucose molecules. Physically the saliva hydrates and compacts the food for ideal propulsion through the pharynx and esophagus. Propulsion is activated voluntarily when we swallow; the tongue moves towards the hard palate of the mouth thus pushing…

down of food particles through chemical reactions, this also begins in the mouth with saliva, chemical digestion within the intra-abdominal digestive system is mainly via enzymes and hydrochloric acid. The stomach releases pepsinogen which turns into pepsin and breaks down proteins, the hydrochloric acid provides a low pH level in which the enzymes can flourish. The combination of enzymes and stomach acid also help to kill any bacteria that may habe been taken in with the food. (Kent, 2000) 2.3…

prior to absorption. First, the chicken is mechanically digested in the mouth when chewed and breaks it into smaller pieces. The partially digested chicken travels to the stomach and begins digesting with the action of enzymes called pepsin (Primal Pictures). Pepsin breaks the bonds that hold the protein molecule together. Once these bonds have been broken they form a chain of amino acids that are linked together called polypeptides (Primal…

with the food to form chyme. Gastric juice consists of HCL and pepsin. HCL creates low pH in the stomach that denatures proteins thus peptide bonds get exposed and vulnerable to pepsin. Proteins are cut up into smaller polypeptides by pepsin. The gastric juice does not destroy the stomach cells because they are activated only when they reach the lumen. HCL composes of hydrogen and chloride ions that are secreted by parietal cells. Pepsin is released by chief cells in the inactive form,…

Digestion is the process of breaking down food by mechanical and enzymatic action in the alimentary canal into substances that can be used by the body. The process of digestion is the way that the body obtains nutrients, fats, carbohydrates, minerals and vitamins necessary to maintain life. Carbohydrates are comprised of complex sugars, which the body will convert to simple sugars for use in numerous ways. Fats are comprised of fatty acids and glycerol. Proteins are made up of many types of…

fixed. Most human enzymes work best at temperatures around our body temperature, 35-40oc. Each enzyme also has a optimal pH. For most enzymes this is around 6-8 pH, but some work better in a more acidic environment. An example is pepsin which works better at a pH of 2. Pepsin is an enzyme in the stomach which helps digest. Just as when the optimum temperature is passed, when the optimal pH is passed the enzyme is…

C, the activity of the enzyme will increase. 4. The four proteases we used are, chymotrypsinogen, trypsinogen, procarboxypeptidase, and pepsinogen. The name of zymogens for each protease in order is chymotrypsin, trypsin, carboxypeptidase, and pepsin. Chymotrypsin and trypsin are activated by enteropeptidase. 5. BOLUS is a round mass of food ready to swallow.…