by Craig Canby, PhD

The meninges’ main function is protecting the central nervous system. They are composed of three membranous layers that envelop the brain and spinal cord. From deep to superficial, respectively, the three layers are the pia, arachnoid, and dura. The term mater (Latin for “mother”” often follows each name (i.e., dura mater, arachnoid mater, pia mater). The dura is made of dense connective tissue that is adherent to the bony structures surrounding the central nervous system (skull and vertebrae). The arachnoid is a thin membranous structure that is located superficial to the pia and deep to the dura. The pia is a thin membrane that adheres directly to the central nervous system structures it envelops (the brain and spinal cord). The presence of these layers allows for the formation of clinically significant potential spaces around them. These spaces, from deep to superficial, respectively, are the subarachnoid, subdural, and epidural spaces. Understanding this basic anatomy is key to understanding the pathology that might affect each, and why they have distinct clinical and radiographic presentations.

Course Details

  • Videos 4
  • Duration 0:16 h
  • Quiz questions 12
  • Concept Pages 1


Your Educators of course Meninges

 Craig Canby, PhD

Craig Canby, PhD

Dr. Craig Canby is a Professor of Anatomy and the Associate Dean for Academic Curriculum and Medical Programs at the College of Osteopathic Medicine at Des Moines University, Iowa, USA.
He obtained his PhD in Anatomy at the University of Iowa.
For his achievements in teaching and research, he received various awards such as the DPT Class of 2008 Teaching Excellence Award and the prestigious Hancher-Finkbine Medallion.
Within Lecturio, Dr. Canby teaches courses on Anatomy.

User reviews

4,7 of 5 stars
5 Stars
4 Stars
3 Stars
2 Stars
1  Star
Bien explicado
By ADRIANA R. on 21. May 2023 for Subarachnoid Space, Epidural Space and Subdural Space

Una imagen con todos los nombres de los aspectos que menciona, podria mejoar la explicación. Gracias.

Highly recommended
By Dianna A. on 27. March 2021 for Meninges

Thank you so much for interesting lectures and amazingly helpful information

By Rawan . on 08. February 2020 for Structures and Functions of the Cranial Meninges

I really appreciate it is perfect! thank you so much lecturio ! Living in France

Well paced, but poor diagram
By Matthieu M. on 19. January 2019 for Dura Mater, Arachnoid Mater and Pia Mater

The organisation of the layers of the meninges and outer regions of the cranium were well put together, but the diagram regarding in the infoldings (falx cerebrum...etc) was poor. I could find way better diagrams with a simple search onto google