The umbilical cord is the living link through which a mother feeds her baby and removes its waste. The cord also becomes the conduit of an ongoing exchange, a silent conversation, in which hormones from the mother
and the baby signal changes in each other’s bodies.
The umbilical cord consists of three blood vessels—two umbilical arteries and one umbilical vein—embedded in slippery connective tissue called Wharton’s jelly. The arteries spiral around the vein, giving the cord the toughness of a cable. At one end of the cord is the baby; at the other is
the placenta.
The baby’s heart pumps depleted blood out of its body through the umbilical arteries to the placenta, where the arteries divide into a network of tiny capillaries. The mother’s blood in the placenta forms a free-flowing, living five-ounce lake about the size of a glass of red wine. This blood is refreshed completely three or four times each minute to supply the baby’s needs. The replenished blood returns through the umbilical cord like a steady, unhindered river bringing the stuff of life to the fetus.
and the baby signal changes in each other’s bodies.
The umbilical cord consists of three blood vessels—two umbilical arteries and one umbilical vein—embedded in slippery connective tissue called Wharton’s jelly. The arteries spiral around the vein, giving the cord the toughness of a cable. At one end of the cord is the baby; at the other is
the placenta.
The baby’s heart pumps depleted blood out of its body through the umbilical arteries to the placenta, where the arteries divide into a network of tiny capillaries. The mother’s blood in the placenta forms a free-flowing, living five-ounce lake about the size of a glass of red wine. This blood is refreshed completely three or four times each minute to supply the baby’s needs. The replenished blood returns through the umbilical cord like a steady, unhindered river bringing the stuff of life to the fetus.
