30 Questions
What is the main function of the umbilical arteries in fetal circulation?
Return oxygen-depleted blood to the placenta
Which shunt in fetal circulation bypasses the lungs and shunts highly oxygenated blood from the right atrium to the left atrium?
Foremen Ovale
What is the function of the Ductus Arteriosus in fetal circulation?
Move blood from the pulmonary artery to the aorta
Which vessel in fetal circulation carries mostly highly oxygenated blood and bypasses the liver?
Ductus Venosus
What triggers induce the structural changes in fetal circulation?
Cessation of placental blood flow
Where does the umbilical cord vein transport blood in fetal circulation?
Fetal heart
What structure remains open for some time after birth allowing final volume of blood to flow from the placenta into the infant prior to occlusion?
Umbilical veins
Which hormone activates the sodium pump that clears fetal lung fluid at birth?
Cortisol
During which month does fetal development occur?
Ninth month
What is the function of the placenta?
Filtering germs that cause infection
Which type of immunoglobulin is present in the blood and can cross the placenta?
IgG
What initiates the opening of the pulmonary circulation at birth?
Initiation of respiration
What occurs as a result of the closure of ductus venosus, arteriosus, and foramen ovale?
Change of fetal circulation to newborn circulation
What is responsible for increasing glucose and fatty acids and blunting blood pressure at birth?
Catecholamines release
What substance covers the wrinkled skin of a developing fetus?
'Vernix Caseosa'
What is the main function of the umbilical arteries in fetal circulation?
Returning oxygen-depleted blood to the placenta
What is the main function of the Ductus Arteriosus in fetal circulation?
Moving blood from the pulmonary artery to the aorta
Where does the umbilical cord vein transport blood in fetal circulation?
To the inferior vena cava and then to the right atrium
What occurs as a result of the closure of ductus venosus, arteriosus, and foramen ovale?
Strengthening of the right ventricle
What structure remains open for some time after birth allowing final volume of blood to flow from the placenta into the infant prior to occlusion?
Ductus arteriosus
Which shunt in fetal circulation bypasses the liver and shunts highly oxygenated blood from the right atrium to the left atrium?
Ductus venosus
What is the function of vernix caseosa in fetal development?
Regulates the fetus body temperature
What occurs as a result of the release of catecholamines (norepinephrine, epinephrine, and dopamine) at birth?
Increased blood pressure
Which vessel in fetal circulation carries blood and oxygen away from the placenta to the fetus?
Umbilical veins
What is the main function of the Ductus Arteriosus in fetal circulation?
Carries mostly highly oxygenated blood and bypasses the liver
Where does the exchange of gases and nutrients between maternal and fetal blood take place?
Placenta
What triggers induce the structural changes in fetal circulation?
Initiation of respiration
During which month does head growth begin to slow and the body increases in length in fetal development?
Third month
What is responsible for increasing glucose and fatty acids and blunting blood pressure at birth?
Catecholamines release (norepinephrine, epinephrine,and dopamine)
What is the main function of the umbilical arteries in fetal circulation?
Discontinuation of Blood flow causing occlusion of umbilical arteries
Test your knowledge on the structural changes that occur in the neonatal circulatory system during initiation of respiration, including the closure of umbilical arteries, veins, ductus venosus, and foramen ovale.
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