Trachea Diffusion of oxygen and carbon dioxide takes place across the walls of the smallest tubes, called tracheoles, which penetrate tissues and even indent individual cells. Gas may be conducted through the respiratory system by means of active ventilation or passive diffusion. Unlike vertebrates, insects do not generally carry oxygen in their haemolymph. This is one of the factors that may limit their size. A tracheal tube may contain ridge-like circumferential rings of taenidia in various geometries such as loops or helices. Taenidia provide strength and flexibility to the trachea. In the head, thorax, or abdomen, tracheae may also be connected
My Name Is Jack My Name Is Jack "My Name Is Jack" is a song written by American record producer John Simon and released as a single by British group Manfred Mann in 1968. Their version reached number 8 on UK record charts. It became an international Top 10 hit, however, in the U.S., the song reached only #104. The lyrics and music were written by John Simon, and his own version was included on the soundtrack of the 1968 film "You Are What You Eat". The song tells the story of a resident of the " Greta Garbo Home for Wayward Boys and