Cutting of body tissues during surgery or for the purposes of anatomical study.
(1) The cutting of tissue to separate the structural components for identi?cation or removal during an operation or the study of anatomy.
(2) Dissection of an artery involves tearing of the inner part of the wall, allowing blood to track through the media occluding the origins of smaller arteries and often leading to vessel rupture (see also ARTERIES).
n. the cutting apart and separation of the body tissues along the natural divisions of the organs and different tissues in the course of an operation. In *interventional radiology, dissection refers specifically to pathological dissection of the intimal layer of an aorta or artery that allows blood to pass through *subintimal space. This may result in occlusion of the vessel branches. Dissection of corpses is carried out for the study of anatomy.
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