अनैच्छिक श्वसन मुख्य रूप से मानव मस्तिष्क के किस भाग द्वारा नियंत्रित होता 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 ________.