That is hormone gastrin. It is secreted by stomach
The stomach
gastrin
Stomach.
no ptyalin is not secretes by the cells in the stomach
Stomach
In the stomach.
it is secreted by stomach glands as an inactive proenzyme, pepsinogen, which is converted to pepsin by the cleavage of acid-labile linkages in the acidic (low pH) environment of the stomach.
The duodenum. The proximal portion of the small intestine.
bile never goes into the stomach unless you are throwing up it is secreted into the small intestine.
Gastrin is produced in the stomach and starts secretion.
Parietal cells