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:
Anatomy. 1  The umbilical vein is 2-3cm long and 4-5mm in diameter. 2  From the umbilicus, it passes cephalad and a little to the right. 3  The ductus venosus arises from the point where the UV joins the left portal vein and bypasses the liver, joining the inferior vena cava just distal to its entry into the atrium atrium.