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.
Advanced Symptoms of HIV/AIDS. As HIV progresses, there may be bouts of diarrhea, nausea, vomiting, and weight loss. Other symptoms include severe headache, joint pain, and muscle aches. Shortness of breath, chronic cough, and difficulty swallowing are not uncommon. In the later stages, HIV can lead to short-term memory loss, mental confusion, and coma. The most advanced stage of HIV is called acquired immune deficiency syndrome (AIDS). At this stage, the immune system is severely compromised and infections become increasingly difficult to fight off.