Atelectasis from the outside (tumor, lymph node, tubercle). Another cause is poor surfactant spreading during inspiration, causing the surface tension to be at its highest which tends to collapse smaller alveoli. Atelectasis may also occur during suction, as along with sputum, air is withdrawn from the lungs. There are several types of atelectasis according to their underlying mechanisms or the distribution of alveolar collapse; resorption, compression, microatelectasis and contraction atelectasis. Relaxation atelectasis (also called passive atelectasis) is when a pleural effusion or a pneumothorax disrupts the contact between the parietal and visceral pleurae. Risk factors associated with increased likelihood of the
History of beliefs about the human body and its disorders and therefore the male body is often explained in place of the female body. A major intervention in the history of the body in the West was Thomas W. Laqueur's 1990 book "Making Sex: Body and Gender from the Greeks to Freud". Laqueur argued that from the eighteenth century into the late twentieth, Western societies had generally thought of humans as having two fundamentally sexes, male and female. But Laqueur argued that from ancient times, the prevailing intellectual understanding of sex was that women were anatomically simply an inferior form of men. For example, Renaldus Columbus, writing