Which structure connects the lateral ventricles to the third ventricle?

The structure that connects the lateral ventricles to the third ventricle is the interventricular foramen. This narrow channel, also known as the foramen of Monro, allows for the flow of cerebrospinal fluid (CSF) between these two ventricular chambers.

The lateral ventricles are located in each hemisphere of the brain, while the third ventricle is situated in the midline, beneath the lateral ventricles. The interventricular foramen serves as an important conduit for CSF, facilitating communication and fluid exchange between these ventricles to help maintain proper fluid dynamics within the ventricular system.

Understanding the role of the interventricular foramen is crucial in neuroanatomy, as any obstruction or malformation can lead to conditions like hydrocephalus, where fluid accumulates and increases intracranial pressure.