Foramen ovale (heart) ovale, the fossa ovalis. A fetus receives oxygen not from its lungs, but from the mother's oxygen-rich blood via the placenta. Oxygenated blood from the placenta travels through the umbilical cord to the right atrium of the fetal heart. As the fetal lungs are non-functional at this time, it is more efficient for the blood to bypass them. This is accomplished through 2 cardiac shunts. The first is the foramen ovale which shunts blood from the right atrium to the left atrium. The second is the ductus arteriosus which shunts blood from the pulmonary artery (which, after birth, carries blood
Brendan (given name) There is no etymological link between "Brendan" and "Brenda". This feminine given name, pronounced , is thought to be derived from the Old Norse element "brand", meaning "(flaming) sword". In most cases, the masculine given name "Brandon", pronounced , is considered to be derived from the surname "Brandon", which is in turn derived from two Old English elements. In some cases, the masculine given name "Brennan" may be used as a contracted form of "Brendan". Brennan is etymologically unrelated to "Brendan". It is derived from the surname "Brennan", which is an Anglicised form of the Irish "Ó Braonáin". The popularity