A duct within the mesencephalon, contains cerebrospinal fluid (CSF), and connects the third ventricle to the fourth ventricle is called:
| 1. | interventricular foramen | 2. | cerebral aqueduct |
| 3. | foramen of Monro | 4. | foramen of Magendie |
Four cavities located within the brain that contain cerebral spinal fluid are known as:
| 1. | sinusoids | 2. | vesicles |
| 3. | ventricles | 4. | lobules |