What is the pathway for fetal blood circulation quizlet?

What is the pathway for fetal blood circulation quizlet?

What is the pathway of blood flow in fetal circulation? The oxygenated blood is carried from the placenta to the fetus via the umbilical vein. About half of this blood passes through the hepatic capillaries and the rest flows through the ductus venosus into theinferior vena cava.

What is the direction of the blood flow in the ductus arteriosus during fetal circulation quizlet?

The ductus arteriosus moves blood from the pulmonary artery to the aorta. Oxygen and nutrients from the mother’s blood are sent across the placenta to the fetus. The enriched blood flows through the umbilical cord to the liver and splits into 3 branches. The blood then reaches the inferior vena cava.

Why is the process of fetal circulation necessary?

Through the blood vessels in the umbilical cord, the fetus receives all the necessary nutrition, oxygen, and life support from the mother through the placenta. Waste products and carbon dioxide from the fetus are sent back through the umbilical cord and placenta to the mother’s circulation to be eliminated.

What are the three circulatory ducts required for Foetal circulation?

The fetal circulatory system bypasses the lungs and liver with three shunts. The foramen ovale allows the transfer of the blood from the right to the left atrium, and the ductus arteriosus permits the transfer of the blood from the pulmonary artery to the aorta.

How does blood flow through the heart and lungs in fetal circulation?

Instead of blood flowing to the lungs to pick up oxygen and then flowing to the rest of the body, the fetal circulation shunts (bypasses) most of the blood away from the lungs. In the fetus, blood is shunted from the pulmonary artery to the aorta through a linked blood vessel called the ductus arteriosus.

What is the difference between fetal circulation and normal circulation?

The fetal circulation system is distinctly different from adult circulation. Fetal circulation bypasses the lungs via a shunt known as the ductus arteriosus; the liver is also bypassed via the ductus venosus and blood can travel from the right atrium to the left atrium via the foramen ovale.

What changes with fetal circulation?

Circulatory Changes at Birth At birth, placental blood flow ceases and lung respiration begins. The sudden drop in right atrial pressure pushes the septum primum against the septum secundum, closing the foramen ovale.

What is the function of the fetal circulation?

Fetal circulation. The function of these shunts is to direct oxygen-rich venous blood to the systemic circulation and to ensure oxygen-deplete venous blood bypasses the underdeveloped pulmonary circulation. There are three shunts in the fetal circulation:

How does fetal circulation change at birth?

Circulatory Changes at Birth. At birth, placental blood flow ceases and lung respiration begins. The sudden drop in right atrial pressure pushes the septum primum against the septum secundum, closing the foramen ovale.

What is normal fetal circulation?

Fetal circulation is an umbrella term for the circulatory system (through which blood and lymph flow throughout the body of the unborn baby and comprises of heart, blood vessels, blood, and lymph) and the placental system (which includes the birth cord and the blood vessels in the placenta…

How does blood flow through the fetal heart?

Inside the fetal heart: Blood enters the right atrium, the chamber on the upper right side of the heart. When the blood enters the right atrium, most of it flows through the foramen ovale into the left atrium.