The cells in the dorsal horn are divided into physiologically distinct layers called laminae. All the segments lack pedicles, laminae and spinous processes. The vertebral arch is formed by pedicles and laminae. The leaves are linear, with the sometimes hairy laminae and membranous hairy ligules. The floor of the groove is formed by the united laminae of the corresponding vertebrae. It can be divided into anterior and posterior laminae. The koniocellular laminae receive axons from the small bistratified ganglion cells. The abaxial faces of the laminae are glabrous or moderately hairy. This process points dorsally and caudally from the junction of the laminae. Fingers with big lateral growths and adherent division less laminae in the bottom face. The laminae are generally dorsiventral and lack secretory cavities. The cavity contains cerebrospinal fluid (CSF) that filters from the ventricles through the septal laminae. Laminins are proteins found in the basal laminae of virtually all animals. The stiff laminae can withstand compressive forces. A single sedimentary rock can have both laminae and beds.