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Pepsinogen is the precursor to the gastric enzyme for protein digestion and is secreted by the parietal cells?
Wiki User
∙ 12y ago
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.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agopepsinogen digestive enzyme secreted by stomach and it digests proteins.protein's digestion start in stomach and it lasts during intestine
by chief cells of the stomach
Wiki User
∙ 12y agoCheif cells of the stomach
Wiki User
∙ 12y agoNo-false
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Gastrin secretes what?
pepsinogen (a precursor of pepsin) which helps humans digest, when activated by HCL.
Why is pepsin secreted as an inactive precursor called pepsinogen?
To avoid damaging to unintended structures
Is there chemical digestion that takes place in the stomach?
Yes, absolutely.The stomach secretes digestive juices that are mostly involved in digesting proteins. This is a chemical digestion process that mostly involves hydrochloric acid and pepsinogen, secreted by the parietal cells and chief cells.
Protein digestion in the stomach results primarily from secretions released by what?
Protein digestion in the stomach results primarily from secretions released by the gastric glands. The enzyme that is secreted is called pepsinogen.
What are macromolecules of digestion?
I think your answer is both pepsin, a secreted inactive form of pepsinogen, and mucus.
What cells secrete hydrochloric acid?
Chief cells lining the stomach. (They actually secrete H+ and Cl- ions individually, but it becomes HCl in the solution).
What would be happen if HCL were not secreted in stomach?
Hydrochloric acid is secreted by the glands present on the stomach walls. It dissolves bits of food and creates an acidic medium. The acidic medium allows pepsinogen to be converted into pepsin. Pepsin plays an important role in the digestion of proteins. Therefore, if HCl were not secreted in the stomach, then pepsin would not be activated. This would affect protein digestion. A pH of about 1.8 is necessary for proteins to be digested. This pH is achieved by HCl.
What substance that is secreted by the parietal cells of the stomach?
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.
Hydrochloric acid is secreted by what cell?
Parietal (oxyntic) cells,,
Stomach secrets hclhydrochloric acid when we eat food what happens to the hcl?
TO make the food in acidic form and make an easy process of digestion so pepsinogen is secreted , when we dont eat food alsur is yet to occur.
What is pepsionogen?
this is the proenzyme of pepsin , which is a protein digesting enzyme. pepsinogen is secreted by gastric mucosal cell
What type of acid is secreted by the gastric pits in the stomach?
Gastric juice is secreted from gastric glands, which are located in narrow tube like structures called gastric pits. Gastric juice contains hydrochloric acid, pepsinogenand mucus in a healthy adult. Hydrochloric acid is secreted by parietal cells, pepsinogen is secreted by gastric chief cells and mucus is secreted by mucus neck cells. Source: Wikipedia
