VIBS 305 Lecture Notes - Lecture 16: Inferior Vena Cava, Ductus Venosus, Ductus Arteriosus

• School: Texas A&M University
• Department: Vet Integrative Biosci
• Course: VIBS 305
• Professor: Michelle D.Pine

Document Summary

Foramen ovale (becomes fossa ovalis in adults) shunts blood from r atrium to l atrium (from the caudal vena ceva) Only a small amount of blood enters the pulmonary trunk Some blood goes to the lungs in order to sustain them. Located on the left side of the atrial septum. Prevents blood from moving in the opposite direction. Shunt blood from pulmonary trunk artery to aorta connects pulmonary trunk artery to the descending part of the aortic arch. Blood from the cranial vena cava bypasses the lungs, and does not enter into the aortic valves going to the brain. Connects umbilical vein with caudal vena cava bypasses the fetal liver. Some blood does go to the lungs just enough to sustain them. Oxygenated blood is mixed with deoxygenated blood from the pulmonary vein and pumped out from the aorta. Umbilical arteries (becomes round ligament of the bladder) - two.