How does blood flow through the fetal heart step by step?
Inside the fetal heart
- Blood enters the right atrium.
- Blood then passes into the left ventricle.
- From the aorta, blood is sent to the heart muscle itself and to the brain and arms.
- This less oxygenated blood is pumped from the right ventricle into the pulmonary artery.
What is the correct order of blood flow in fetal circulation?
Most of the blood flows to the left side through a special fetal opening between the left and right atria. This is called the foramen ovale. Blood then passes into the left ventricle (lower chamber of the heart). It then goes to the aorta (the large artery coming from the heart).
What is the order of the pathway of blood through the heart?
The blood enters the left atrium. It drops through the mitral valve into the left ventricle. The left ventricle then pumps blood through the aortic valve and into the aorta. The aorta is the artery that feeds the rest of the body through a system of blood vessels.
What are the 3 fetal shunts?
Three shunts in the fetal circulation
- Ductus arteriosus. protects lungs against circulatory overload. allows the right ventricle to strengthen.
- Ductus venosus. fetal blood vessel connecting the umbilical vein to the IVC.
- Foramen ovale. shunts highly oxygenated blood from right atrium to left atrium.
What are the 4 shunts in fetal circulation?
The closure of the ductus arteriosus, ductus venosus, and foramen ovale completes the change of fetal circulation to newborn circulation.
What are the steps of the blood flow through the heart quizlet?
Steps of Blood Flow in the Heart
- Deoxygenated blood flows from the inferior and superior vena cava into the right atrium.
- The right atrium contracts.
- The blood flows through the tricuspid valve into the right ventricle.
- The right ventricle contracts and blood flows from the pulmonary artery to the lungs.
How circulation works step by step?
Blood cells pick up oxygen in the lungs. Pulmonary veins carry the oxygenated blood from the lungs to the heart’s left atrium (upper heart chamber). The left atrium sends the oxygenated blood into the left ventricle (lower chamber). This muscular part of the heart pumps blood out to the body through the arteries.
What is fetal blood circulation?
The fetal circulation system is distinctly different from adult circulation. This intricate system allows the fetus to receive oxygenated blood and nutrients from the placenta. It is comprised of the blood vessels in the placenta and the umbilical cord, which contains two umbilical arteries and one umbilical vein.