The cerebral aqueduct connects which ventricles?

The cerebral aqueduct connects which ventricles?

• A. Third and fourth ventricles
• B. Lateral and third ventricles
• C. Fourth ventricle and subarachnoid space
• D. Lateral and fourth ventricles

Answer: (A)

The main idea here is how CSF travels through the ventricular system. The aqueduct of Sylvius is a narrow canal that connects the third ventricle to the fourth ventricle, allowing cerebrospinal fluid to flow between them as it moves through the brainstem region. This makes the correct connection the one between the third and fourth ventricles. The lateral ventricles drain into the third via the foramina of Monro, not the aqueduct, and the fourth ventricle communicates with the subarachnoid space (not directly with the ventricles) through the foramina of Luschka and Magendie. So, the path from the third to the fourth ventricle is the key connection.

The main idea here is how CSF travels through the ventricular system. The aqueduct of Sylvius is a narrow canal that connects the third ventricle to the fourth ventricle, allowing cerebrospinal fluid to flow between them as it moves through the brainstem region. This makes the correct connection the one between the third and fourth ventricles. The lateral ventricles drain into the third via the foramina of Monro, not the aqueduct, and the fourth ventricle communicates with the subarachnoid space (not directly with the ventricles) through the foramina of Luschka and Magendie. So, the path from the third to the fourth ventricle is the key connection.