बच्चे का अनुकूलतम शारीरिक और मानसिक विकास मुख्य रूप से किस पर निर्भर करता है?

Which digestive hormone inhibits both gastric secretion and motility, stimulates insulin release, and is secreted mainly when fat is present in the duodenum?

The repeated sequence of gradual onset of apnoea followed by gradual restoration of respiration is called ________.