Lateral ventricle
Ventriculus lateralis
NervousOrgansHeadLeft and right
View left in 3D View right in 3D
- What it is
- The C-shaped CSF cavity inside each hemisphere: an anterior (frontal) horn, a body under the corpus callosum, the atrium, a posterior (occipital) horn and an inferior (temporal) horn curving down and forward into the temporal lobe.
- Function
- Its choroid plexus makes most of the cerebrospinal fluid, which cushions the brain, carries away wastes and buoys the brain so it effectively weighs only ~50 g.
- Size
- About 7-10 ml each; body 1-1.5 cm wide
- Clinical note
- It drains through the interventricular foramen (of Monro) into the third ventricle; blockage there enlarges it (obstructive hydrocephalus).