( Layers of Scalp(Frontal Section Superior sagittal sinus agittal suture Parietal emissary vein Arachnoid granulations Lateral lacunae Dermis [corum Epicranial aponeurosis Parietal bone External table Diploic veins Diplo Calvaria Intemal table Cranial dura mater Subarachnoid space Cranial arachnoid [leptomeningeal space mater Cranial pia mater Cerebral cortex Subarachnoid space Falx cerebri (cerebral White matter Iwhite substance Fig. 451 Calvaria and meninges: coronal section at level of small blood vessels of pia mater and perineural sheaths of cran crown of the head and spinal nerves contribute to the drainage of cerebrospinal In the adult reabsorption of cerebrospinal fluid is achieved mainly fluid via the arachnoid granulations. Moreover, lymphatic sheaths of（一）Layers of Scalp (Frontal Section)