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
Kerry (name) Kerry (name) Kerry or Kerri is both a masculine and feminine English language given name of Gaelic (Irish) origin. In its original form Ciarraighe ("Ciarraí"), it denoted "the people of Ciar" ("ciar-raighe"), Ciar being the son of Fergus mac Róich, who gave his name to County Kerry. Ciarraighe was thus the name of the pre-Gaelic tribe who lived in the area of what is now County Kerry. However branches of the Ciarraighe were all over Ireland: Kerry is also a common surname and as such is of Welsh origin, though sometimes spelled Ceri. However, Ceri (pronounced Kerry) is more commonly