part of part of anatomical space fourth ventricle lateral recess of fourth ventricle http://upload.wikimedia.org/wikipedia/commons/3/36/Gray768.png Wikipedia:Lateral_recess lateral recess lateral recess of the 4th ventricle The lateral recess is a projection of the fourth ventricle which extends into the inferior cerebellar peduncle of the brainstem. The lateral aperture, an opening in each extremity of the lateral recess, provides a conduit for cerebrospinal fluid to flow from the brain's ventricular system into the subarachnoid space. UBERON:0007656 neuronames:642 FMA:78470 recessus lateralis (ventriculi quarti) recessus lateralis ventriculi quarti fourth ventricle lateral recess DHBA:12810 BAMS:V4r SCTID:369283008 BAMS:LR4V EMAPA:17257 MBA:153 lateral recess of third ventricle