Umbilical cord from the offspring. The cord along with the placenta is often eaten by the mother, to provide nourishment and to dispose of tissues that would otherwise attract scavengers or predators. In chimpanzees, the mother leaves the cord in place and nurses her young with the cord and placenta attached until the cord dries out and separates naturally, within a day of birth, at which time the cord is discarded. (This was first documented by zoologists in the wild in 1974.) Some species of shark — hammerheads, requiems and smooth-hounds — are viviparous and have an umbilical cord attached to their
Retroverted uterus Retroverted uterus A retroverted uterus (tilted uterus, tipped uterus) is a uterus that is tilted posteriorly. This is in contrast to the slightly "anteverted" uterus that most women have, which is tipped forward toward the bladder, with the anterior end slightly concave. Between 1 in 3 and 1 in 5 women (depending on the source) have a retroverted uterus, which is tipped backwards towards the spine. The following table distinguishes among some of the terms used for the position of the uterus: A retroverted uterus should be distinguished from the following: Additional terms include: In most cases, a retroverted uterus