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
Love Is What Stays It is more adventurous and downright wily in its aims than anyone could have hoped for." Jurek says that music fans looking "for true authenticity and artfully made American popular music, should snap this up as quickly as possible. Time will be the judge, but Love Is What Stays may become a Murphy masterpiece and - let's face it - the man embodies the very essence of "hip." And always will." Love Is What Stays Love Is What Stays is a 2007 studio album by Mark Murphy, arranged by Nan Schwartz and Till Brönner. For Murphy's second Verve album, he