Rishi Pokhrel

1. Arch of Aorta
download these slides free of cost from
www.slideshare.com

2. - Arch of Aorta is continuation of asc aorta at sternal
angle
- Begins and terminates at sternal angle
- Connects ascg & descg aorta
- Arches over root of left lung
- Situated in sup mediastinum behind manubrium
- Summit of arch reaches level of middle of manubrium
Introduction

4. Course
- Begins as continuation of ascg aorta behind Rt
2nd
chondrosternal joint
- Passes up, back and left infront of bifurcation
of trachea
- finally turns backwards & downwards behind
the left bronchus n continues as descg aorta at
lower border of T4 V

5. Course

6. Course

7. Azygos vein
TS at T4 V level
CS- superior mediastinum

8. Relations

9. Anterior & to left –
Lt pleura & lung
Lt phrenic N
left cardiac nerves
(Inf cervical cardiac br of Xth N
Sup cervical cardiac br Symp trunk
Lt vagus
Lt Rec laryngeal N hooks upwards
below arch of aorta
Lt sup IC vein

10. Posterior & to right –
Trachea with deep cardiac plexus
Oesophagus
Lt Rec laryngeal nerve
Thoracic duct
Vertebral column

11. Inferior
• Left bronchus
• Bifurcation of pul trunk
• Lig arteriosum
• Left recurrent laryngeal
nerve
• Sup cardiac plexus

12. Superior
• Brachiocephalic trunk
• Lt commom carotid A
• Lt subclavian A
• Lt brachiocephalic vein

13. Branches
- Rt brachiocephalic trunk
– div into Rt CC & Rt SC artery
- Lt common carotid artery
- Lt subclavian artery
- Occasionally Thyroidea
Ima A & Vertebral A

14. Brachiocephalic
trunk
Lt Common Carotid
Lt Subclavian
Branches
Arch of Aorta

15. Development

18. Developmental anomalies

20. Applied Anatomy

21. Aortic knuckle

22. Coarctation of aorta
localised narrowing of aorta distal to Left
Subclavian origin
1.Preductal
2.Postductal
3.Juxtraductal
collateral circulation b/w SC & Descg
Thoracic aorta
• Notching of ribs
• Pulsating scapula

25. Aortic aneurysm – localised dilatation of aorta

29. Patent ductus arteriosus