| ACROSS | DOWN |
| 1 ______ fluid is a clear fluid that circulates in and around the CNS. | 2 The matrix for blood vessels that branch out over the surface of the CNS (two words) |
| 4 Where cerebrospinal fluid is produced. | 3 A kind of disease that is a major cause of speech and communicative disorders. |
| 5 The first artery from the heart | 4 Arterial blood supply is conveyed to the CNS via internal carotid arteries and ________ arteries. |
| 6 Venous sinuses occur within the _____ mater. | |
| 7 Layers of connective tissue that enclose the CNS. | |
| 8 The middle layer of the meninges | |
| 9 A circular formation of arteries in the skull. (3 words) |