FUNKCIJA WILLISOVOG KRUGA U ATENUACIJI PULSNIH VALOVA

Introduction Nearly 400 years ago, Thomas Willis described the arterial ring at the base of the brain (the circle of Willis, CW) and recognized it as a compensatory system in the case of arterial occlusion. This theory is still accepted. Several arguments are not supporting compensatory function: (1) Current theory is anthropocentric; it ignores other species and their analog structures; (2) Arter…