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Questions and Answers
What is the underlying cause of coarctation of the aorta?
What is the underlying cause of coarctation of the aorta?
- Narrowing proximal to the descending aorta
- Narrowing at the junction of the 4th and 5th arches
- Narrowing distal to the left subclavian artery (correct)
- Narrowing at the origin of the right subclavian artery
Which condition results from the failure of the ductus arteriosus to close?
Which condition results from the failure of the ductus arteriosus to close?
- Coarctation of the aorta
- Abnormal origin of the subclavian artery
- Right aortic arch
- Patent ductus arteriosus (correct)
What developmental anomaly leads to a right aortic arch?
What developmental anomaly leads to a right aortic arch?
- Persistence of the right 6th arch
- Persistence of the right dorsal aorta and degeneration of the left dorsal aorta (correct)
- Degeneration of both dorsal aortae
- Degeneration of the left 3rd aortic arch
Which congenital anomaly is most commonly associated with the 7th intersegmental artery?
Which congenital anomaly is most commonly associated with the 7th intersegmental artery?
What persistence leads to the anomaly where the distal part of the right dorsal aorta remains?
What persistence leads to the anomaly where the distal part of the right dorsal aorta remains?
How many sets of aortic vessels are formed during the initial stages of development?
How many sets of aortic vessels are formed during the initial stages of development?
What structure connects the ventral aortic sac to the dorsal aortae?
What structure connects the ventral aortic sac to the dorsal aortae?
Which vessel is termed as a 'dilated vessel above the truncus arteriosus'?
Which vessel is termed as a 'dilated vessel above the truncus arteriosus'?
What does the proximal part of the 3rd aortic arch give rise to?
What does the proximal part of the 3rd aortic arch give rise to?
Which part of the left dorsal aorta forms the descending aorta?
Which part of the left dorsal aorta forms the descending aorta?
What happens to the 5th aortic arch during development?
What happens to the 5th aortic arch during development?
Which embryological structure gives rise to the ductus arteriosus?
Which embryological structure gives rise to the ductus arteriosus?
Flashcards
Aortic vessels at initial development
Aortic vessels at initial development
Three sets of aortic vessels form during the initial stages of development.
Connection of ventral aortic sac
Connection of ventral aortic sac
Aortic arches connect the ventral aortic sac to the dorsal aortae.
Dilated vessel above truncus arteriosus
Dilated vessel above truncus arteriosus
The ventral aortic sac is a dilated vessel found above the truncus arteriosus (a large artery).
3rd Aortic Arch proximal part development
3rd Aortic Arch proximal part development
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Left dorsal aorta and descending aorta
Left dorsal aorta and descending aorta
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5th aortic arch fate
5th aortic arch fate
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Left aortic sac's structure
Left aortic sac's structure
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Right subclavian artery stem
Right subclavian artery stem
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Coarctation of the aorta
Coarctation of the aorta
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Patent ductus arteriosus
Patent ductus arteriosus
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Right aortic arch
Right aortic arch
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Persistence of distal right dorsal aorta
Persistence of distal right dorsal aorta
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Right subclavian artery abnormality
Right subclavian artery abnormality
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Study Notes
Cardiovascular System Development (CVS)
- Aortic Vessel Formation: At the initial stages, three sets of aortic vessels form.
Aortic Arch Connections
- Ventral Aortic Sac to Dorsal Aorta Connection: Aortic arches connect the ventral aortic sac to the dorsal aorta.
Vessel Description
- Truncus Arteriosus Dilated Vessel: The ventral aortic sac is described as a dilated vessel superior to the truncus arteriosus.
Aortic Arch Fate
- 3rd Aortic Arch Proximal Part Fate: The proximal part of the third aortic arch gives rise to the external carotid artery.
5th Aortic Arch Fate
- 5th Aortic Arch Development: The fifth aortic arch disappears during development.
Embryological Parts of the Aortic Arch
- Left Aortic Sac Structure: The left part of the aortic sac forms the proximal arch of the aorta.
Right Subclavian Artery Origin
- Right Subclavian Artery Origin: The right subclavian artery stem arises from the right fourth aortic arch.
Ductus Arteriosus Origin
- Ductus Arteriosus Origin: The ductus arteriosus develops from the ventral part of the sixth aortic arch (left side).
Congenital Anomalies (Main Arteries)
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Right Subclavian Artery Anomalies: Right subclavian artery abnormalities can originate from a persistence of the right fourth aortic arch and dorsal aorta superior to the 7th intersegmental artery.
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Double Aortic Arch: This arises from a persistence of the distal part of the right dorsal aorta.
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Aortic Coarctation: This involves a narrowing of the aorta, distally to the left subclavian artery.
Ductus Arteriosus Failure
- Patent Ductus Arteriosus: A failure of the ductus arteriosus closure, leads to this condition.
Right Aortic Arch Development
- Right Aortic Arch Anomaly: A right aortic arch arises due to the persistence of the right dorsal aorta and degeneration of the left dorsal aorta.
7th Intersegmental Artery Association
- 7th Intersegmental Artery Association: A right subclavian artery abnormality is associated with this artery.
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