हीमोग्लोबिन की सांद्रता में कमी प्राथमिक रूप से किस शारीरिक कार्य को प्रभावित करेगी?

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 ________.