1. STRAIGHT SINUS

2. TRANSVERSE & SIGMOID SINUSES

3. OCCIPITAL SINUS

4. CAVERNOUS & INTERCAVERNOUS
SINUSES

5. CAVERNOUS SINUS THROMBOSIS

6. SUPERIOR & INFERIOR PETROSAL
SINUSES

7. EPIDURAL SPACE
SPINAL
CEREBRAL

9. SUBDURAL SPACE

10. CEREBRAL ARACHNOID MATER

11. ARACHNOID VILLI

12. ARACHNOID GRANULATION

14. SPINAL ARACHNOID MATER

15. SUBARACHNOID SPACE

18. SUBARACHNOID CISTERNS

20. CEREBRAL PIA MATER
LEPTO-
MENINGES