Blood Vessels and Cerebrospinal Fluid

Overview

The brain’s blood supply and cerebrospinal fluid circulation support neural metabolism, protection and waste clearance. This section introduces the major arterial, venous and CSF pathways essential to central nervous system function.

Key Structures

Topics include arterial supply to the brain, venous drainage, dural venous sinuses, the cavernous sinus and the ventricular system.

Clinical Relevance and Learning Focus

Understanding neurovascular and CSF anatomy is essential for recognising stroke patterns, venous thrombosis, raised intracranial pressure and infections. The material supports clinical reasoning in neurology, neurosurgery and emergency care.

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The Arterial Supply to the Central Nervous System

Coronal section illustrating the contents of the right cavernous sinus.

The Cavernous Sinus

Sagittal section illustration of the dural venous sinuses and the great cerebral vein.

The Dural Venous Sinuses

An anatomical diagram illustrating the external and internal vertebral plexuses.

The Venous Drainage of the Central Nervous System

Diagram illustrating the anatomical positioning of the brain ventricles.

The Ventricles of the Brain

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