Lateral Ventricle FEATURES The lateral ventricles are two

Lateral Ventricle

FEATURES • The lateral ventricles are two irregular cavities situated one in each cerebral hemisphere. • Each lateral ventricle communicates with the third ventricle through an interventricular foramen (foramen of Monro). • Each lateral ventricle consists of: 1. A central part 2. Three horns: a. b. c. Anterior Horn Posterior Horn Inferior Horn

Ventricle seen from the lateral surface

Ventricles of brain (superior view)

BOUNDARIES Body or Central Part Roof Trunk of corpus callosum. Floor Superior surface of thalamus, thalamostriate vein, stria terminalis, body of caudate nucleus Medial Septum pellucidum, body of fornix.

Boundaries central part of lateral ventricle (coronal section)

Anterior Horn • Roof: Anterior part of trunk of corpus callosum. • Anterior: Genu and rostrum of corpus callosum. • Floor: Head of caudate nucleus. • Medial wall: Septum pellucidum and column of fornix.

Boundaries of anterior horn of lateral ventricle (coronal section)

Posterior Horn • Roof and lateral wall: Tapetum of corpus callosum. • Medial wall: Bulb of posterior horn above and calcar avis below.

Boundaries of posterior horn of lateral ventricle

Inferior Horn Roof and lateral wall: Tapetum, tail of caudate nucleus, stria terminalis and amygdaloid nucleus. Floor: Pes hippocampus, alveus, fimbria, dentate gyrus and collateral eminence.

Boundaries of inferior horn of lateral ventricle

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