आपके अंगों और शरीर प्रणालियों की कोशिकाओं तक रक्त, पोषक तत्व और ऑक्सीजन पहुँचाना किस प्रणाली में केशिकाओं (capillaries) की प्राथमिक भूमिका 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 ________.