Atlas of Anatomy

40 Blood Vessels of the Brain & Spinal Cord

Dural Sinuses & Veins of the Brain

Fig. 40.1   Confluence of the sinuses
Posterior view.

image

image

Fig. 40.2   Superficial cerebral veins

image

Fig. 40.3   Basal cerebral venous system
Basal view.

image

Fig. 40.4   Veins of the brainstem
Basal view.

image

Fig. 40.5   Dural sinuses in the skull base
Superior view of the opened cranial cavity. Removed: Tentorium cerebelli (right side).

image

Arteries of the Brain

Fig. 40.6   Internal carotid artery
Left lateral view. See p. 490 for details of the internal carotid artery.

image

Fig. 40.7   Arteries of the brainstem and cerebellum
Left lateral view.

image

Fig. 40.8   Arteries of the brain
Basal (inferior) view.

image

Fig. 40.9   Cerebral arteries

image

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.

image

Arteries & Veins of the Spinal Cord

image 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.

image

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.

image