मानव हृदय वाहिका तंत्र (cardiovascular system) में, उत्तर-मध्य वयस्कता के बाद आयु बढ़ने के साथ आमतौर पर निम्नलिखित में से किसमें कमी आने की प्रवृत्ति होती 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 ________.