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
Body-to-body communication Culture can influence nonverbal communication in many ways. The same gestures in different countries can have distinct meaning. For example, the American A-OK sign can have an obscene meaning in many nations in Europe, having sexual implications. Facial expression is another mean of nonverbal communication that culture affects. Humans have the ability to express emotions through facial expressions. "Cultural display rules" are learned during childhood and plays a big part on how people from different cultures manage and modify their emotional expressions depending on the social situation that they are in. In an experiment done my Ekman and Friesen; results