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 My Name "A few poor production choices and uneven sequencing do slow the album, but it shows flashes of real brilliance. The best tracks here are produced by Kanye and Pharrell, and they're concentrated at the beginning and end. The smattering in the middle of the tracklist is handled by host of collaborators, not all of them effectively complimenting Pusha's rawness. While not the defining statement it could’ve been, "My Name Is My Name" shows different sides of Pusha T as he becomes a more multidimensional rapper." Jabbari Weekes of "Exclaim!" said, "A majority of "My Name Is My Name"'s sounds are