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
Which Is Witch Which Is Witch Which Is Witch is a 1948 "Looney Tunes" cartoon released by Warner Bros. in 1949, directed by Friz Freleng and written by Tedd Pierce. Bugs Bunny is exploring Dark Africa. A short witch doctor ("Dr. I.C. Spots") wants to use him as a key ingredient in a prescription. Initially believing he is enjoying a hot bath, Bugs notices that he's being cooked and escapes, while Dr. Spots chases him. Bugs disguises himself as a Zulu native woman but this ploy fails. In the river, he finds and swims to a ferry boat. As Dr. Spots follows a