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umbilical cord formation
Human embryological and fetal development. An embryo of six weeks is depicted within halved amnion, chorion, and uterus and showing formation of the umbilical cord. Fetus of three months is shown within halved amnion, chorion, and uterus.
caul
embryology
- Related Topics:
- amnion
- amniotic sac
- afterbirth
caul, a portion of the amnion, or bag of waters, which is sometimes found remaining around the head of a child after birth. The term also is applied occasionally to the serous membrane covering the heart, brain, or intestines. It is derived from the original meaning of a close-fitting woman’s cap, especially one made of network. Many superstitions were attached to the infant caul; it was looked on as a sign of good luck and, when preserved, was kept as a protection against drowning.