FIGURE 1-11 Body Cavities. (a) The dorsal body cavity is bounded by the bones of the skull and vertebral column. The muscular diaphragm divides the ventral body cavity into a superior thoracic (chest) cavity and an inferior abdominopelvic cavity.he Thoracic Cavity The walls of the thoracic cavity surround the lungs and heart; associated organs of the respiratory, cardiovascular, and lymphatic systems; the inferior portions of the esophagus; and the thymus.
Half marathon. A half marathon is a road running event of 21.0975 kilometres (13.1094 mi) â half the distance of a marathon. Participation in half marathons has grown steadily since 2003, partly due to the fact that it is a challenging distance, but does not require the same level of training that a marathon does.
From Wikipedia, the free encyclopedia. Finish of the Two Oceans Marathon at the University of Cape Town. The Two Oceans Marathon is a 56km / 35-mile ultramarathon and 21km half-marathon held annually in Cape Town, South Africa on the Saturday of the Easter weekend.Known globally as the world's most beautiful marathon, the race is run against a backdrop of spectacular scenery through the Cape Peninsula.elling out every year, the Half Marathon sees some 16 000 participants (making it the biggest half marathon in South Africa), while 11 000 athletes tackle the 56km Ultra Marathon.