Neuroanatomy Atlas in Clinical Context

70 CHAPTER 4 / MENINGES, CISTERNS, VENTRICLES, AND RELATED HEMORRHAGES

Massa intermedia

Body of lateral ventricle

Pineal recess

Suprapineal recess

Third ventricle

Anterior horn of lateral ventricle

Posterior commissure

Pineal

Atrium of lateral ventricle (and glomus choroideum)

Interventricular foramen

Posterior horn of lateral ventricle

Anterior commissure

Tectum

Lamina terminalis

Cerebral aqueduct

Infundibular recess

Supraoptic recess

Fourth ventricle

Optic chiasm

Infundibulum Mammillary body Amygdaloid nuclear complex

Lateral recess of fourth ventricle

Foramen of Luschka

Dorsal cerebellomedullary cistern (cisterna magna)

Inferior horn of lateral ventricle

Bordering Structures

Ventricular Space

Genu of corpus callosum

Anterior horn of lateral ventricle

Head of caudate nucleus

Septum pellucidum

Body of lateral ventricle (ventral to body of corpus callosum)

Third ventricle

Body of caudate nucleus

Fornix

Suprapineal recess

Amygdaloid nuclear complex

Inferior horn of lateral ventricle

Tail of caudate nucleus

Hippocampal formation

Cerebral aqueduct

Splenium of corpus callosum

Atrium of lateral ventricle (contains glomus choroideum)

Optic radiations

Lateral recess of fourth ventricle

Tapetum

Fourth ventricle

Posterior horn of lateral ventricle Copyright © Wolters Kluwer, Inc. Unauthorized reproduction of the content is prohibited. 2024

4-10 Lateral ( above ) and dorsal ( below ) views of the ventricles and the choroid plexus. The dashed lines show the approxi mate positions of some of the important structures that border on the ventricular space. These structures are easily identified in MRI and/or CT in any plane. The choroid plexus is shown in red , and structures bordering on the various portions of the ventricular spaces are color coded; these colors are continued in Figure 4-11 on the facing page.

Note the relationships between the choroid plexus and various parts of the ventricular system. The large expanded portion of the choroid plexus found in the area of the atrium is the glomus ( glomus choroi deum ). Note the only naturally occurring constrictions to the flow of CSF through the ventricular system are the interventricular foramina (of Monro), cerebral aqueduct, and foramina of Luschka and Magendie of the fourth ventricle.