Development of aorta and
To MBBS 1st year
By Dr. Laxman Khanal
Department of anatomy
1. Should be able to list the developmental sources of arterial system.
2. Should be able to understand the origin of pharyngeal arch system.
3. Should be able to list the derivatives of pharyngeal arch arteries.
4. Should be able to explain important developmental anomalies.
• Ascending aorta
• Arch of aorta
o Rt brachiocephalic trunk
o Lt common carotid artery
o Lt subclavian artery
• Descending aorta
o Oesophageal & Bronchial
o Post intercostal & subcostal
• Pulmonary trunk
o Rt & Lt pulmonary artery
Rt/Lt coronary arteries
Double aortic arch
Rt dorsal aorta between 7th
interssegmetal artery and fused
dorsal aorta persists.
• Difficulty in breathing
Q. All are the direct branches of aorta except.
a.Right brachiocephalic trunk b. left brachiocephalic trunk
c. Left common carotid artery d. left subclavian artery
Q. Which of the following arterial malformations is very common in
(A) Patent ductus arteriosus (B) Coarctation of the aorta
(C) Abnormal right subclavian artery (D) Double aortic arch
Q. Ascending aorta and pulmonary trunk are derivatives of.
a. Ductus arteriosus b. Dorsal aorta
c. Aortic sac d. Truncus arteriosus
Q. A 9-year-old boy has no pulse in the femoral artery, increased blood
pressure in the arteries of the upper extremity, and enlarged intercostal veins,
Which of the following abnormalities would be suspected?
a. Preductal coarctation of aorta b. double aortic arch
c. Postductal coarctation of aorta d. patent ductus arteriosus
Q. Ductus arteriosus is the derivatives of.
a. Rt 6th arch artery b. Lt 6th arch artery
c. Ductus caroticus d. Lt 4th arch artery
Q. Right recurrent laryngeal nerve hooks around.
a. Rt subclavian artery b. Rt pulmonary artery
c. Arch of aorta d. Rt brachiocephalic trunk