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Home Â» Distal. Definition. adjective. (1) (anatomy) Characterized by being far from the point of anatomical reference. (2) (anatomy) Being situated far from the point of attachment to the body. (3) (dentistry) Describing a position directed away or farther from the midline and front of the jaw. Supplement.
Proximal and distal. Proximal refers to the end of a structure nearest a major point of reference and distal to the end furthest from a point of reference. The point of reference is usually the origin of a structure (such as a limb) or the ventral midline of the body. Proximal and distal are relative terms.These terms are correctly used to describe relative positions of structures in the limbs. Medial and lateral.ranial refers to the head end and caudal to the tail end. Anterior and posterior. In a quadruped the terms are synonymous with cranial and caudal. In a biped (Homo) anterior is used to indicate the ventral surface and posterior to indicate the dorsal surface.