निम्नलिखित में से कौन सा शब्द ग्रासनली (esophagus) की मांसपेशियों के उस लयबद्ध संकुचन का वर्णन करता है जो भोजन को आमाशय (stomach) की ओर धकेलता 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 ________.