page_title: Lateral ventricles
section_title: Trigone of lateral ventricle
hierarchical_section_title: Lateral ventricles / Structure / Trigone of lateral ventricle
caption_attribution_description: English: Trigone of lateral ventricle (shown in red) 日本語: 側脳室三角部（赤色で示す）
context_page_description: The lateral ventricles are the two largest ventricles of the brain and contain cerebrospinal fluid. Each cerebral hemisphere contains a lateral ventricle, known as the left or right ventricle, respectively.
  Each lateral ventricle resembles a C-shaped cavity that begins at an inferior horn in the temporal lobe, travels through a body in the parietal lobe and frontal lobe, and ultimately terminates at the interventricular foramina where each lateral ventricle connects to the single, central third ventricle. Along the path, a posterior horn extends backward into the occipital lobe, and an anterior horn extends farther into the frontal lobe.
context_section_description: The trigone of the lateral ventricle is the area where the part of the body forms a junction with the inferior horn and the posterior horn. This area is referred to as the atrium  of the lateral ventricle, and is where the choroid plexus is enlarged as the choroid glomus. As a triangular surface feature of the floor of this part of the lateral ventricle it is known as the collateral trigone.
caption: Trigone of lateral ventricle shown in red.
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