Injection of the. right vertebral artery demonstrated retrograde flow. into the left vertebral artery (Fig. 1). Thoracic. aortography failed to delineate any obstruction in. the proximal segments of the great vessels. CASE II: ].
Yellow poplar or tulip poplar is the tallest hardwood tree in North America with one of the most perfect and straight trunks in the forest. Yellow poplar has a very unique leaf with four lobes separated by rounded notches. The showy flower is tulip-like (or lily-like) which supports the alternate name of tulip poplar.ellow poplar or tulip poplar is the tallest hardwood tree in North America with one of the most perfect and straight trunks in the forest. Yellow poplar has a very unique leaf with four lobes separated by rounded notches. The showy flower is tulip-like (or lily-like) which supports the alternate name of tulip poplar.
Poplar is a closed-grain hardwood that has many uses. Poplar is a type of wood that is commonly used to make furniture, wood toys, moldings and paneling.ecause of this, there may be some confusion as to why poplar wood is considered a âhardwood.â Since the yellow poplar is a deciduous tree â meaning that the tree sheds its leaves annually â the wood from the yellow poplar is considered to be a hardwood rather than the âsoftwoodsâ that evergreen trees produce.