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
Given name names are special given names bestowed upon someone receiving a crown or entering a religious order. Such a person then typically becomes known chiefly by that name. The order "given name – family name", commonly known as the "Western order", is used throughout most European countries and in countries that have cultures predominantly influenced by European culture, including North and South America; North, East, Central and West India; Australia, New Zealand, and the Philippines. The order "family name – given name", commonly known as the "Eastern order", is primarily used in East Asia (for example in China, Japan, Korea, Malaysian