Concept of Disease - Padilla Flashcards
The extrinsic vascular system in the cortex is composed of:
perforating pial arteries enter, non-perforating veins leaving. each vein is surrounded by 6-8 arteries. (Perforating vessels remain outside of the nervous tissue and together they represent the brain’s extrinsic microvascular compartment.)
the intrinsic microvascular system in the cortex is composed of:
an anastomotic capillary network connecting contiguous perforating arteries. = blood brain barrier. Counterintuitively, it is part of the extra cerebral compartment (the extrinsic is part of the intracerebral compartment).
What are the components of the meningeal compartment?
The extracerebral or meningeal compartment contains three essential constituents: the outer dural, the middle arach- noidal, and the inner pail lamellae.
The dural lamella contains the main venous sinuses, the arachnoidal lamella contains the brain main arteries and veins, and the pial lamella contains the pial capillary anastomotic plexus
What is the Virchow-Robin compartment?
Virchow–Robin spaces are gaps containing interstitial fluid that span between blood vessels and the brain matter which they penetrate.The V-RC function as the brain sole drainage (prelymphatic) system in both physiological as well as pathological situations.
