Dural Sinuses & Veins of the Brain
Fig. 40.1 Confluence of the sinuses
Fig. 40.2 Superficial cerebral veins
Fig. 40.3 Basal cerebral venous system
Fig. 40.4 Veins of the brainstem
Fig. 40.5 Dural sinuses in the skull base
Superior view of the opened cranial cavity. Removed: Tentorium cerebelli (right side).
Arteries of the Brain
Fig. 40.6 Internal carotid artery
Left lateral view. See p. 490 for details of the internal carotid artery.
Fig. 40.7 Arteries of the brainstem and cerebellum
Left lateral view.
Fig. 40.8 Arteries of the brain
Basal (inferior) view.
Fig. 40.9 Cerebral arteries
Fig. 40.10 Cerebral arteries: Distribution areas
The central gray and white matter have a complex blood supply (yellow) that includes the anterior choroidal artery.
Arteries & Veins of the Spinal Cord
Like the spinal cord itself, the arteries and veins of the spinal cord consist of multiple horizontal systems (blood vessels of the spinal cord segments) that are integrated into a vertical system.
Fig. 40.11 Arteries of the spinal cord
The unpaired anterior and paired posterior spinal arteries typically arise from the vertebral arteries. As they descend within the vertebral canal, the spinal arteries are reinforced by anterior and posterior segmental medullary arteries. Depending on the spinal level, these reinforcing branches may arise from the vertebral, ascending or deep cervical, posterior intercostal, lumbar, or lateral sacral arteries.
Fig. 40.12 Veins of the spinal cord
The interior of the spinal cord drains via venous plexuses into an anterior and a posterior spinal vein. The radicular and spinal veins connect the veins of the spinal cord with the internal vertebral venous plexus. The intervertebral and basivertebral veins connect the internal and external venous plexuses, which drain into the azygos system.