FACTOID # 8: Bookworms: Vermont has the highest number of high school teachers per capita and third highest number of librarians per capita.
 
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 
   
 
WHAT'S NEW
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Subarachnoid space

The meninges (singular meninx) are the system of membranes that contain the brain. It consists of three layers, the dura mater, the arachnoid, and the pia mater.

  • The pia or pia mater is a very delicate membrane. It is closest to the brain and follows all the minor contours of the brain.
  • The middle element of the meninges is the arachnoid, so named because of its spider web-like appearance.
  • The dura mater is a thick, durable membrane, closest to the skull.

The subarachnoid space is the space that normally exists between the arachnoid and the pia.


Normally, the dura mater is attached to the skull, the arachnoid is attached to the dura mater, and the pia mater is attached to the brain. When the dura mater and the arachnoid separate through injury or illness, the space between them is the subdural space.


A subdural hematoma is, therefore, a separation of the arachnoid from the dura mater. The small veins that connect the dura mater and the arachnoid are torn, and blood can leak into this area. Other medical conditions that affect the menegies include meningitis, a viral or bacterial infection of the meninges.


  Results from FactBites:
 
Subarachnoid space - Wikipedia, the free encyclopedia (267 words)
The Subarachnoid Cavity (subarachnoid space) is the interval between the arachnoid mater and pia mater.
It is occupied by a spongy tissue consisting of trabeculæ (delicate connective tissue filaments that extend from the arachnoid mater and blend into the pia mater) and intercommunicating channels in which the subarachnoid fluid is contained.
Subarachnoid space - Cistern - Cisterna magna - Median aperture - Cerebrospinal fluid - Arachnoid granulation - Pia mater
  More results at FactBites »

 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m