With a simple set of bolt-ons â like an intake, tune, and exhaust â we have no reservations that the EcoBoost will run with a GT, all while being able to achieve 32+ miles per gallon. Weâve seen Focus STâs pick up 30 horsepower and 50 lb/ft of torque to the wheels on just tunes.
The ductus arteriosus connects the pulmonary artery to the aorta, the ductus venosus connects the umbilical vein to the inferior vena cava, and the foramen ovale allows blood to go directly from the right atrium to the left atrium. The pathway of blood through the fetal circulation system is as follows:
The tributaries of the inferior vena cava differ from the branches of the aorta in two respects. First, those corresponding to the anterior visceral branches of the aorta form the portal vein, which passes into the liver at the porta hepatis. Venous blood then returns to the inferior vena cava via the right, middle, left and accessory hepatic veins.