Mesoderm lining the coelom forms mesothelium. Separation of Peritoneal and Pleural Cavities: In the adult, peritoneal and pleural cavities are separated by the diaphragm. The diaphragm isformed by a septum transversum, paired pleuroperitoneal folds, and somatic mesoderm.
Myth One. Myth: AIDS is mostly an African problem. Fact: Of the 42 million people around the world who live with HIV/AIDS, 70% are in sub-Saharan Africa. HIV/AIDS exists and is spreading in Africa in a socioeconomic context created by western colonialism and, more recently, western trade and economic policies.
AIDS in Africa. The prevalence of HIV/AIDS is highest in Southern Africa. HIV/AIDS in Africa is one of the most important global public health issues of our time, and perhaps, in the history of mankind. In Africa, AIDS is one of the top causes of death. While only comprising slightly under 15% of the total population of the world, Africans account for nearly 70% of those who live with HIV and are dying of AIDS.