Record the labels for this illustration is the answer column. Record the answers

Question

Record the labels for this illustration is the answer column. Record the answers for the following questions in the answers column. What blood vessel in the umbilical cord supplies the fetus with nutrients? What blood vessels in the umbilical cord return blood to the placenta from the fetus? What blood vessel shunts blood from the pulmonary artery to the aorta? What vessel I the liver carries blood from the umbilical vein to the inferior vena cava? What structure in the liver is formed from the ductus venonus? What structure forms from the ductus arteriousus? What structure forms from the umbilical vein? What structure enables blood to flow from the right atrium to the left atrium before birth? Give two occurrences at childbirth that prevent excessive blood loss by the infant through the cut umbilical cord. What structures near the bladder form from the hypogastric arteries? Record the labels for this illustration in the answer column. By referring to figures 54.1

Explanation / Answer

Answer

53.1)

1. Umbilical vein

2. Umbilical artery

The umbilical vein carries oxygenated, nutrient-rich blood from the placenta to the fetus, and the umbilical arteries carry deoxygenated, nutrient-depleted blood from the fetus to the placenta

3. Ductus arteriosus

4. Ligament venosum

There are three differences, called shunts, between the circulatory system of a fetus and that of an adult (see image at right). These three shunts cause the blood to flow through a different pathway. The ductus arteriosus connects the pulmonary artery to the aorta, the ductus venosus connects the umbilical vein to the inferior vena cava, and the foramen ovale allows blood to go directly from the right atrium to the left atrium.

5. Ligament venosum

6. Ligament arteriosum

7. Ligament tere hepatis(round ligament)

8. Foramen ovale

9. Umbilical arteries and umbilical vein closes and coagulation take place to prevent excessive blood loss when the umbilical cord is cut.

10. Lateral umbilical ligament

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