Question

Digestive secreation are secreted only when needed.discuss

Answer 1

Answer:

Digestive secretions like hydrolytic enzymes are secreted only when food enter in the gastrointestinal tract. otherwise the enzymes would have autodigested the tract. And there would have been wastage of enzymes

Answer 2

Answer:

$Digestive Enzymes</p><p></p><p>Digestive enzymes are secreted by glandular cells which will store the enzyme in secretory vesicles until they are ready to be released. These cells are characterised by a robust rough endoplastic reticulum and numerous mitochondria. Passage of materials from the ribosomes, through the endoplasmic reticulum and Golgi body to the secretory vesicles takes about 20 minutes.$