brachiocephalic trunk Animals 4 Brachiocephalic Trunk 4 Connective Tissue 4 Muscle, Smooth, Vascular 4 adventitia 4 animal tissue 4 artery diameter 4 artery tone 4 article 4 controlled study 4 impedance 4 in vitro study 4 in vivo study 4 nonhuman 4 pulse wave 4 sheep 4 Adventitia 2 Adventitial function 2 Arterial buffering function 2 Arterial conduit function 2 Arterial impedance 2 Basic research 2 Dynamic afterload 2 Elastic modulus 2 Elasticity 2 Female 2 Hemodynamics 2 Male 2 Models, Biological 2