collateral sulcus

Introduction

The deep sagittal fissure on the undersurface of the temporal lobe, marking the border between the hippocampal gyrus & lingual gyrus medially.

The great depth of the collateral sulcus results in a bulging of the floor of the occipital horn & temporal horn of lateral ventricle (the collateral eminence & trigone)

More general terms

• sulcus

Additional terms

• collateral eminence
• collateral trigone; trigone of lateral ventricle

Component of

• temporal lobe