Anatomi Systema Cardiovasculare : Sirkulasi fetus

Summary

This educational video script discusses the fetal circulation system, focusing on the umbilical cord's connection to the fetus and mother. It explains the unique blood flow through the umbilical vein and arteries, including the role of the ductus venosus and foramen ovale. The script also highlights the changes that occur at birth, such as the closure of the foramen ovale and the transformation of the umbilical structures into ligaments, reflecting the shift from fetal to neonatal circulation.

Takeaways

• 🔴 The fetal blood circulation is connected to the mother through the umbilical cord.
• 🩸 The umbilical cord contains one vein and two arteries.
• 🌐 The vein, called the umbilical vein, carries oxygen and nutrients from the placenta to the fetus.
• 🔄 The two arteries, known as the umbilical arteries, carry blood back to the placenta to be cleansed of metabolic waste.
• 📍 After birth, the umbilical vein becomes the ligamentum teres hepatis.
• 💧 The umbilical vein passes through the abdominal wall and goes cranially to the liver.
• 🔄 The blood from the umbilical vein enters the inferior vena cava and then the right atrium of the heart.
• 🫀 The blood from the inferior vena cava has a low oxygen level, but the blood from the umbilical vein is highly oxygenated.
• 🚫 The foramen ovale allows the oxygen-rich blood to bypass the lungs and enter the left atrium.
• 🔄 The ductus venosus and ductus arteriosus are essential for fetal circulation but close after birth.
• 🌀 After birth, the circulatory system undergoes significant changes as the lungs expand and the umbilical structures close.

Q & A

What is the main topic of the lecture?

The main topic of the lecture is the circulation of fetal blood.

What is the connection between the fetal blood circulation and the mother?

The fetal blood circulation is connected to the mother through the umbilical cord.

What does the umbilical cord contain?

The umbilical cord contains one vein and two arteries.

What is the function of the umbilical vein?

The umbilical vein carries oxygen and nutrients from the placenta to the fetus.

What is the name of the vein that will become the ligamentum teres hepatis after birth?

The vein that will become the ligamentum teres hepatis after birth is the umbilical vein.

What is the role of the two arteries in the umbilical cord?

The two arteries carry blood back to the placenta to be cleansed of metabolic waste.

What is the term for the arteries that will become the ligamentum arteriosum after birth?

The arteries that will become the ligamentum arteriosum after birth are called the umbilical arteries.

How does the umbilical vein navigate through the abdominal wall after birth?

After birth, the umbilical vein becomes the ligamentum venosum, which is a fibrous remnant.

What is the foramen ovale and its function in fetal circulation?

The foramen ovale is a shunt that allows blood from the inferior vena cava to bypass the lungs and directly enter the left atrium.

What changes occur to the fetal circulation structures after birth?

After birth, the umbilical vessels, ductus venosus, and ductus arteriosus close, and the foramen ovale also closes, leading to changes in blood circulation.

What is the role of the ductus arteriosus in fetal circulation?

The ductus arteriosus allows blood to bypass the lungs by connecting the pulmonary artery to the aorta.

What happens to the structures that facilitate fetal circulation at birth?

At birth, the ductus arteriosus becomes the ligamentum arteriosum, the foramen ovale closes to become the fossa ovalis, the ductus venosus becomes the ligamentum venosum, the umbilical vein becomes the ligamentum teres hepatis, and the umbilical arteries become the ligamentum bingkai remedial.