fetalheart development

At what week of gestation does the fetal heart start beating?

Which of the following structures allows blood to bypass the fetal lungs

What is the main function of the foramen ovale in fetal circulation?

• To bypass the lungs in fetal circulation.
• To supply oxygen to the fetus.
• To filter waste from the fetal blood.
• To connect the aorta to the pulmonary artery.

Which vessel carries oxygen-rich blood from the placenta to the fetus?

• Umbilical vein
• Pulmonary vein
• Aorta
• Umbilical artery

Which vessel carries oxygen-rich blood from the placenta to the fetus?

• Umbilical vein
• Pulmonary vein
• Aorta
• Umbilical artery

Which of the following structures remains after birth as the ligamentum arteriosum?

• Pulmonary artery
• Ductus venosus
• Ductus arteriosus
• Foramen ovale

which is the function of the ductus venosus in fetal circulation

• To filter toxins from the blood before reaching the heart.
• To supply nutrients directly to the lungs.
• To connect the placenta to the stomach.
• To bypass the liver and direct oxygenated blood to the heart.

Which of the following changes is most commonly seen in the aging heart

• Increased elasticity of blood vessels
• Thinner heart walls
• Decreased heart rate
• Increased stiffness of the heart muscle

Which of these conditions is often associated with aging in the heart

• Heart failure and arrhythmias
• High blood pressure and diabetes
• Asthma and allergies
• Kidney stones and gallbladder issues

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