Tag: oesophagus and stomach -intermediate

HCl activates the zymogen pepsinogen into pepsin. Similarly, enterokinase (an intestinal enzyme) activates the pancreatic zymogen trypsinogen into trypsin.

Ptyalin (salivary amylase) functions in a neutral pH and is inactivated by the acidic environment of the stomach, whereas pepsin requires this acidic environment to be activated.

Pepsin is the primary gastric enzyme that hydrolyzes proteins into smaller peptide fragments.

Gastrin is a hormone secreted by G-cells in the stomach that stimulates the parietal cells to secrete gastric acid and promotes gastric juice secretion.

Pepsin is the primary enzyme responsible for the digestion of proteins in the stomach.

Zymogenic (chief) cells in the stomach are responsible for the secretion of pepsinogen, the inactive precursor of pepsin.

Prorennin (the precursor to rennin) is produced by the zymogen (chief) cells of the gastric glands in the stomach.

Peptic cells, also known as chief cells or zymogen cells, are responsible for secreting pepsinogen into the stomach lumen.

Rennin is a proteolytic enzyme specifically found in the gastric juice of young mammals, which is essential for the coagulation of milk protein (casein). Other enzymes like amylase or invertase are involved in carbohydrate digestion.

Parietal cells (also known as oxyntic cells) in the gastric glands secrete hydrochloric acid and intrinsic factor. Intrinsic factor is a glycoprotein necessary for the absorption of vitamin B12 in the small intestine.