because each enzyme has an own purpose
expressed in the stomach but not expressed in the small intestine
The stomach contains enzymes that break down protein.
The pancreas produces various digestive enzymes needed for the breakdown of carbohydrates, proteins, and fats. The stomach secretes gastric enzymes like pepsin to break down proteins. The salivary glands also produce amylase, which initiates the digestion of carbohydrates in the mouth.
Small Intestine,Stomach and third one i don't know
No, the small intestine does not produce digestive enzymes. Instead, it receives enzymes from the pancreas and bile from the liver that help break down food for absorption. The small intestine primarily absorbs nutrients from the digested food.
food will be absorbed
First, food goes to stomach where pepsin (a protease enzyme) is released into the stomach. The food then enters the small intestine and at this point, any pancreatic enzymes are released from the pancreas. The enzymes present in the small intestine include: Lactose, DPP IV and dissacharrides.
In the alimentary canal, enzymes are primarily produced by the salivary glands, stomach, pancreas, and small intestine. The salivary glands secrete enzymes like amylase for carbohydrate digestion, while the stomach produces pepsin for protein digestion. The pancreas releases a variety of enzymes, including lipase, amylase, and proteases, into the small intestine, where additional enzymes are secreted by the intestinal lining to aid in the final stages of digestion.
The enzymes of the stomach will be different from those of the small intestine. The presence of the bolus stimulates the small intestine to produce secretin, which in turn stimulates the liver, pancreas, and gall bladder to secrete various enzymes, whereas the proteases of the stomach are activated by the low pH.Pepsin, a protease and protein-digesting enzyme of the stomach, is released by chief cells as pepsinogen. The highly acidic chyme (pH: 1.5-2) clips off some of the pepsinogen molecule, exposing its active region. Pepsin could not be made from pepsinogen in the small intestine however, due to the bicarbonate ions that are released to neutralize the chyme dumped into the duodenum, creating a slightly basic solution.Similarly, the low pH of the stomach would immediately denature any proteins (enzymes) found in the rest of the body, like the small intestine. The enzymes used in the stomach are specialized for the extremely low pH, though other enzymes are not. Pepsinogen released into the small intestine could not function as an enzyme properly.
No, the esophagus does not produce digestive enzymes. Its primary function is to transport food from the mouth to the stomach through rhythmic muscle contractions known as peristalsis. The production of digestive enzymes occurs mainly in the salivary glands, stomach, pancreas, and small intestine. The esophagus is primarily a conduit for food rather than a site for digestion.
Your saliva produces enzymes to break down food and your stomach has them too, but I am pretty sure that your stomach doesn't produce as much as your saliva.
The largest variety of digestive enzymes function in the small intestine. This is where the majority of nutrient absorption takes place, and different enzymes break down carbohydrates, proteins, and fats into smaller molecules that can be absorbed by the body.