Atelectasis be bibasal in pattern. Chest CT or Bronchoscopy may be necessary if the cause of atelectasis is not clinically apparent. Direct signs of atelectasis include displacement of interlobar fissures and mobile structures within the thorax, overinflation of the unaffected ipsilateral lobe or contralateral lung, and opacification of the collapsed lobe. Atelectasis may be an acute or chronic condition. In acute atelectasis, the lung has recently collapsed and is primarily notable only for airlessness. In chronic atelectasis, the affected area is often characterized by a complex mixture of airlessness, infection, widening of the bronchi (bronchiectasis), destruction, and scarring (fibrosis). The atmosphere
History of beliefs about the human body as imbalances of the 4 fluids of the body. Aristotle was unable to dissect humans but did so to many animals and was a early founder of comparative anatomy. Aristotle did contend quasi spiritual manifestations of the body principally through sexual distinctions. He wrote that the sex of humans: “is determined by the male principle already contained in the semen. If this is not strong enough, then the opposite must necessarily come into existence, and the opposite of man is woman.” Aristotle clearly superimposed man as the more important figure in men and women but presents an almost Qi like