शारीरिक व्यायाम करने से पहले और बाद में नाड़ी दर (pulse rate) को मापने से छात्रों में मुख्य रूप से किसका विकास 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 ________.