1 Functional Behavior of the Vascular Mechanisms of the Brain under Various Conditions.- I Investigating the Behavior of Different Parts of the Cerebrovascular System.- II Vascular Mechanisms and Changes in Systemic Arterial Pressure.- Role of the Major Arteries in Maintaining a Constant Inflow of Blood into the Circle of Willis.- Functional Behavior of the Pial, Precortical, and Cortical Arteries during Changes of the Systemic Arterial Pressure.- Functional Insufficiency of Vascular Mechanisms during Changes in Systemic Arterial Pressure.- III Intracranial Circulatory Disorders.- Occlusion of Jugular Veins (Mild and Transient Stagnation of Venous Blood).- Severe Stagnation of Blood in the Cerebral Vessels Resulting from Occlusion of the Cranial (Superior) Vena Cava.- Traumatic Cerebral Edema.- Systemic Asphyxia.- Postischemic States.- Increased Activity of the Cerebral Cortex.- Ischemia of the Cerebral Cortex Resulting from Occlusion of the Pial Arteries.- Collateral Blood Supply.- Terminal State Preceding Death.- IV Causes of Primary Disturbance of the Cerebral Circulation.- Spasm of the Cerebral Arteries.- Significant Increase of Resistance in the Very Small Cerebral Vessels as a Cause of Cerebrovascular Disturbances.- Double Significance of Some Compensatory Responses in Cerebrovascular Disorders.- V Organization of the Vascular Mechanisms.- 2 Physiological Mechanisms of Functional Behavior of the Cerebral Arteries.- VI The Major Arteries.- Direct Effects of Physiologically Active Substances on the Internal Carotid Arteries.- Sympathetic and Other Nervous Effects on the Major Arteries.- Role of Reflexes from the Carotid Sinus Receptors in Autoregulatory Responses of Major Arteries.- Reflex Vasoconstriction Arising from Intracranial Receptors.- VII The Pial Arteries.- Humoral Feedback from Brain Tissue to the Pial Arteries.- Nervous Feedback Mechanism from Brain Tissue to the Pial Arteries.- Concluding Remarks.
