निम्नलिखित में से कौन सा हार्मोन हृदय की धड़कन (heart beat) को उत्तेजित 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 ________.