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 inferior vena cava may be doubled (2.2-3.0% of cases) or it may be absent. If the inferior vena cava is absent, the blood from the lower limbs may pass through the diaphram into the superior vena cava by way of a large vein in the location of the ascending lumbar and azygos veins.he inferior vena cava may receive the left spermatic vein. On occasion it receives a left accessory renal vein that passes behind the aorta. It is into this vessel that the usual tributaries of the left renal vein may open.