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Bassett Collection of Stereoscopic Images of Human Anatomy

Exploration of the brain from the medial aspect

Lateral ventricle; internal cerebral vein within transverse fissure

Image #16-3

KEYWORDS: Brain, Diencephalon, Telencephalon, Vasculature, Ventricules.

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Exploration of the brain from the medial aspect
Lateral ventricle; internal cerebral vein within transverse fissure
The septum pellucidum has been cut away to expose the lateral ventricle. The column of the fornix (3) has been cut opposite the foramen of Monro and the body of the fornix turned upward. A thickened part of the septum pellucidum (also cut) is associated with the fornix. This is continuous with tissue in the subcallosal gyrus. The choroid plexus of the third and lateral ventricles bounds the most anterior extent of the transverse fissure. The internal cerebral vein (5) is injected and most of the visible branches lie within the transverse fissure.
1 . Inferior surface of fornix (fornix reflected upward)
2 . Caudate nucleus (forming sloping floor of anterior horn of lateral ventricle)
3 . Fornix column (divided)
4 . Thickened part of septum pellucidum continuous into subcallosal gyrus
5 . Internal cerebral vein
6 . Stria terminalis
7 . Choroid plexus continuing through interventricular foramen from roof of third ventricle to body of lateral ventricle
8 . Position of interventricular foramen (of Monro)
9 . Subcallosal gyrus
10 . Anterior commissure (cut across)
11 . Fornix (column) approaching mammillary body
12 . Lamina terminalis
13 . Posterior parolfactory sulcus
14 . Optic recess and optic chiasm
15 . Parolfactory area
16 . Anterior tubercle of thalamus
17 . Choroidal branch of posterior cerebral artery
18 . Stria medullaris thalami
19 . Massa intermedia (cut through)
20 . Mamillothalamic tract
21 . Periventricular fibers
22 . Medial central branch of posterior cerebral artery
23 . Fasciculus retroflexus
24 . Floor of third ventricle and mamillary body