Three substances secreted by the stomach are:
1) Hormones. The most important of these is gastrin, which is secreted by the stomach's G cells. Gastrin is an important hormone in digestion, in that it brings about the stimulation of parietal cells to produce gastric juice, which contains the acid HCl, water, and pepsinogen (a precursor to pepsin).
Gastrin is released in response to distention of the stomach, stimulation of the vagus nerve or degranulation of mast cells to give histamine. Gastrin secretion is inhibited by the presence of acid (a form of self-regulative negative feedback) and also the hormones secretin and somatostatin.
2) Acid. The HCl secreted by parietal cells into the lumen of the stomach serves a number of functions. It creates an acidic environment that kills bacteria, denatures protein, hydrolyses the zymogen pepsinogen to its active form, pepsin and provides the optimum pH for pepsin action.
3) Mucus. Mucus is secreted by the gastric gland's mucus cells and, to a lesser extent, mucus neck cells. Mucus is a cloudy, viscous and alkaline substance that forms a thick gel-like coat that adheres to the surface epithelium and protects it from abrasion and the acid content of the stomach.
4) Another important secretion is preoteases, such as pesinogen and rennin.
The gastricgland realeses the protien digesting enzyme pepsin dilute HCL
and mucuos.
HCl
Which if you remember Chemistry is hydrochloric acid
Hydrochloride acid
Parietal cells
no ptyalin is not secretes by the cells in the stomach
Parietal cells have an endoplasmic reticulum organelles, tubular agranular reticulum, nucleus and vesicles. Parietal cells of the stomach secretes acid.
Parietal cells and chief cells
Eukaryote
Parietal cells
In the stomach.
The normal pH of the stomach is about 2-3 and is caused by a high concentration of HCl secreted by the parietal cells of the stomach.
Chief cells lining the stomach. (They actually secrete H+ and Cl- ions individually, but it becomes HCl in the solution).
Parietal cells
Gastrin is a hormone secreted by the stomach which stimulates the secretion of hydrochloric acid, increase motility, and stomach emptying.
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.
Parietal (oxyntic) cells,,
Parietal cells are found in the fundic zone of the stomach.
Parietal cells are found in the fundic zone of the stomach.
no ptyalin is not secretes by the cells in the stomach
Intrinsic factor is secreted by the parietal cells and is critical for absorption of B12. When the body attacks the parietal cells b12 deficiency results which is called "pernicious anemia."