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In anatomy, a suture is a fairly rigid joint between two or more hard elements of an organism, with or without significant overlap of the elements. [ 1 ] Sutures are found in the skeletons or exoskeletons of a wide range of animals, in both invertebrates and vertebrates .
The suture line has four main regions. Placenticeras sp. showing sutures. The external or ventral region refers to sutures along the lower (outer) edge of the shell, where the left and right suture lines meet. The external (or ventral) saddle, when present, lies directly on the lower midline of the shell.
Human anatomy is the scientific study of the morphology of the adult human. It is subdivided into gross anatomy and microscopic anatomy . Gross anatomy (also called topographical anatomy, regional anatomy, or anthropotomy) is the study of anatomical structures that can be seen by unaided vision.
Anatomical "lines", or "reference lines," are theoretical lines drawn through anatomical structures and are used to describe anatomical location. The following reference lines are identified in Terminologia Anatomica: Anterior median line; Lateral sternal line: A vertical line corresponding to the lateral margin of the sternum.
The ecdysial suture is longitudinally placed on the vertex, separating the epicranial halves of the head to the left and right sides. Depending on the insect, the suture may come in different shapes: like either a Y, U or V. Those diverging lines that make up the ecdysial suture are called the frontal or frontogenal sutures.
Suture (anatomy), a rigid joint between hard parts of animals Suture (joint), concerning the major joints in the bones of the cranium; Ammonitic suture, the intersection of the septum with the outer shell in Ammonites; Facial suture (trilobite), divisions in the cephalon (head) of most trilobites, along which the exoskeleton splits during molting
Where the septum meets the shell a suture line forms; in some ammonoids these lines became extremely complex and elaborate, providing strength without the necessity of added weight. Elaborate sutures allowed for thinner shells, and hence less time needed for shell growth and less time spent in the vulnerable juvenile stage.
The pectineal ligament is strong, and holds suture well. [citation needed] This facilitates reconstruction of the floor of the inguinal canal. [citation needed] It is a useful landmark for pelvic surgery. [1] A variant of non-prosthetic inguinal hernia repair, first used by Georg Lotheissen in Austria, now bears his name. [citation needed]