Tagma (anatomy)
Tagmata (singular Tagma , ancient Greek τάγμα tagma , Pl. Τάγματα tagmata ) are body sections in animals with a segmented physique , which consist of several identically developed or fused segments and usually form a functional unit. The emergence of functionally differentiated body sections (tagmata) through specialization of segment groups, i. H. in the case of heteronomous segmentation, it is called tagmatization. In arthropods, the first tagma always consists of fused segments and, depending on its function, is called head (caput), cephalon , prosoma or cephalothorax . The following hull may be segmented uniformly, but is divided mostly into two distinct tagmata. In insects , for example, the body is divided into the tagmata “head” (caput: acron + six segments), “chest” (thorax: three segments) and “abdomen” (abdomen: eleven or fewer segments + telson ).
literature
- DR Khanna: Biology of Arthropoda . Discovery Publishing House, 2004, ISBN 978-81-7141-897-8 , pp. 390-391 .