Venous drainage of brain

1. Dr. Rati Tandon
J.N.M.C.,AMU,
ALIGARH

2.  Veins of brain intracranial dural venous
sinusesinternl jugular veins of neck.

3.  Characterstic features of venous drainage of
brain :
- Does not have arterial pattern.
- Extremely thin walled (absence of muscular
tissue in walls).
- No valves.
- Run in subarachnoid space.

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Neurosurgery
Veins of the Head and Neck
Scalp/Emissary
veins
Facial
veins
Neck
veins
Brain and meningeal
veins
Diploic
veins
Meningeal
veins
Dural
sinuses
Cerebral
veins
Superficial Deep

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Neurosurgery
 Superficial veins
 Deep veins

6.  Drain the surface (cortex) of cerebral
hemisphere:
 3 groups:
1. Superior cerebral veins
2. Middle cerebral veins
3. Inferior cerebral veins.

7.  Superior cerebral veins
- 8 to 12 in number
- Drain- Superolateral and
Medial surface
- Ascends upwards
Arachnoidmater
 Subdural space
 Superior saggital sinus.

8.  Four in number : 2 on each side
- Superficial middle cerebral vein
- Deep middle cerebral vein

9.  Superficial middle cerebral vein :
- Lies superficially in lateral sulcus.

10. - Anteriorly, drains into cavernous sinus.
- Posteriorly, communicates with Superior
saggital sinus through superior anastomotic
vein (of Troland).
- With Transverse sinus
via inferior
anastomotic
vein of Labbe.

11.  Lies deep in lateral
sulcus.
 Joins anterior cerebral
vein to form the basal
vein.

12.  Drains :
- Inferior surface,
- Lower parts of medial and superolateral
surfaces.

13.  Anterior cerebral vein:
- Accompanies anterior cerebral artery.
- Drains medial surface.

14.  Basal vein of Rosenthal:
- Formed at base of brain
- By union of three veins:
Anterior cerebral vein
Deep middle cerebral
vein
Striate vein
 Basal vein terminate
into Great cerebral vein
of Galen

15.  Each internal cerebral
vein is formed at
interventricular
foramen of Monro.
 Union of three veins:
- Thalamostriate vein
(thalamus and basal
ganglia)
- Septal vein (septum
pellucidum)
- Choroidal vein (choroid
plexus).

16.  Two internal cerebral veins joins to form Great
cerebral vein of Galen  Straight sinus.

17.  Length 2cm
 Union of 2 internal cerebral vein
 Receives two basal veins
too.
 Joins inferior saggital
sinus.
 Drains into straight sinus.

18.  Tributaries:
- Internal cerebral V
- Basal V
- Veins from colliculi
- Veins from cerebellum.

20.  Upper part 
Superior cerebral
veins SSS.
 Lower part Inferior
cerebral
veinssuperficial
middle cerebral vein.
 Posteroinferior part 
Transverse sinus.

21.  Orbital part inferior
cerebral V superficial
middle cerebral V and
Anterior cerebral V.
 Tentorial part:
- to venous sinuses
(cavernous,superior
petrosal, straight and
transverse sinus.
- Superficial middle cerebral
veincavernous sinus
- Basal vein straight sinus

22.  Upper partsuperior
cerebral V superior
saggital sinus.
 Lower partinferior
cerebralinferior
saggital sinus
 Posterior part  great
cerebral vein
 Anterior part 
anterior cerebral vein.

23.  Subdural haemmorhage:
- rupture of cerebral veins in subdural space.

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Neurosurgery
Thalamostriate vein Septal vein
Internal Cerebral
vein (2)
Basal vein of
Rosenthal (2)
Occipital
vein (2)
Posterior
Pericallosal
vein (2)
Mesencephalic
vein (2)
Precentral
Cerebellar
vein (1)
Vein of Galen Inferior Sagittal Sinus
Straight Sinus