The Monro-Kellie doctrine: volumes (compartments) relations according to volume stability and volume adaptability during cerebrospinal fluid homeostatic hydrodynamic processes.
Explanation of terms:
VOLUME I: Brain, meninges and medulla spinalis. Their volume is relatively constant and passive during homeostatic hydrodynamic changes.
VOLUME II: Blood and blood vessels in brain and medulla spinalis. Their volume is primarily regulated by an autonomic cranial blood pressure bio mechanism based on reflex controlled vasoconstriction and vasodilatation.
VOLUME III: Cranial and spinal cerebrospinal fluid space. Its volume is controlled by a bio mechanism described in the presented article.
VOLUME IV: Cranial intradural venous blood and venous blood in spinal extradural space. Venous blood may be passively driven out of intracraniovertebral space or retained.
Stability: volume changes
Constant: volume remains relatively constant
Variable: volume can be changed
Adaptability: volumes adaptation in relation to each other Passive: volume adapts passively
Active: volume adapts actively
Darko D. Lavrenčič, M.D.
Uploaded to http://www.med-lavrencic.si/raziskava.htm on 27 April 2007