What is "cerebral aqueduct"

n. The channel in the brain which connects the third ventricle to the fourth ventricle. It is surrounded by the periaqueductal gray.

n. a canal connecting the third and fourth ventricles [syn: Sylvian aqueduct, aqueductus cerebri]

The cerebral aqueduct, also known as the aqueductus mesencephali, mesencephalic duct, or the aqueduct of Sylvius is within the mesencephalon (or midbrain), contains cerebrospinal fluid (CSF), and connects the third ventricle in the diencephalon to the fourth ventricle within the region of the mesencephalon and metencephalon, located dorsal to the pons and ventral to the cerebellum.