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
Theology of the Body supports the equality of men and women in marriage and expressly opposes any subordination of the woman to the man." Thomas Petri, O.P. says, "Charles Curran can be excused for his criticism to the contrary since it was made before the publication of Waldstein's translation." The religion editor for "Newsweek", Kenneth L. Woodward, has described John Paul's Theology of the Body as "a highly romantic and unrealistic view of human sexuality." Benedictine Sebastian Moore, a controversial Catholic moral theologian who often criticizes some Catholic teachings, expresses his disagreement openly with the "Theology of the Body". Moore criticizes what he regards