The Canadian singer and songwriter recorded The Wreck of the Edmund Fitzgerald on his 1976 album Summertime Dream.. The single hit No. 1 in Canada and reached No. 2 on the Billboard Hot 100 chart in the United States.
After conception, the fertilized egg meanders to the end of your fallopian tube and enters your uterus, searching for the uterine wall. If it successfully implants itself there, the placenta will begin to form at that very spot about a week later. By the end of the first trimester, the placenta is fully grown and weighs about 1 1/4 pounds.
Further information: Placenta. In placental mammals, the placenta forms after the embryo implants into the wall of the uterus. The developing fetus is connected to it via an umbilical cord. Animal placentas are classified based on the number of tissues separating the maternal from the fetal blood. The placentation types found in animals are: