pepsin
The enzyme secreted from the gastric gland in the stomach that acts on proteins is pepsin. It is produced in an inactive form called pepsinogen, which is activated by hydrochloric acid (HCl) in the stomach. Pepsin breaks down proteins into smaller peptides, facilitating protein digestion.
In the case of protein digesting enzymes, known as endopeptidases, such as those secreted in the stomach (pespin), it is obvious. If they were secreted active they would digest the glands which secrete the enzymes themselves (gastric glands). Instead they must be secreted in an inactive form, which once in the stomach and exposed to HCl acid and other pepsin enzymes the pepsinogen activates and begins digesting protein.
No, DNA is not secreted by glands. DNA is found inside the cell nucleus and serves as the genetic blueprint for an organism. Glands secrete hormones, enzymes, and other substances, but not DNA.
The small intestine is the site of work of some digestive enzymes that are secreted there. It is not an ideal site for the continued work of enzymes from the stomach, as the pH is not hospitable for the work of those gastric enzymes.
No, testosterone is not secreted by the prostate gland, it is secreted by the testes.
Adrenaline Gland
The pancreas produces a whole spectrum of digestive enzymes, including amylase, lipase, and proteases, which are secreted into the duodenum to aid in the digestion of carbohydrates, fats, and proteins, respectively. These enzymes are essential for breaking down food molecules into nutrients that can be absorbed by the body.
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
produce gastric juice
Melatonin is secreated by the pineal gland.
Gastric Gland
The posterior lobe of the pituitary gland in the brain.