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Figs. 18 to 25. The descent of the fourth aortic arch and the definitive aortic arch into the thorax
Shown in relation to the cervical vertebrae and ribs.
- Asterisk - so-called fifth aortic arch
- 4 - fourth aortic arch
- d. a. - definitive aortic arch
- R. 1 - first rib
- in. art. - innominate artery
- c. r. - cervical rib
- c. c - common carotid
- v. art. - vertebral artery
- a. r. - remnant of segment of dorsal aorta, interrupted between third and fourth aortic arches
- sub. art. - subclavian artery
In figures 20 and 24 the sternal bands are not yet in contact above and the definitive aortic arch has a large radius of curvature.
In figures 21 and 25 the bands have met and the arch has become sharply bent by the swinging dorsally of the heart.
- Human Aortic Arch 1922: Table 1 | Fig. 1-16 | Fig 17 | Fig 18-25 | Fig 18 | Fig 19 | Fig 20 | Fig 21 | Fig 22 | Fig 23 | Fig 24 | Fig 25 | Fig 26 | Fig 27-28 | Fig 29 | Fig 30 | Fig 31 | Fig 32 | Fig 33 | Fig 34 | Fig 35 | Fig 36 | Fig 37 | Fig 38 | Fig 39 | Fig 40 | Plate 1 | Plate 2 | Plate 3 | Carnegie No.68 | Volume XIV | Contributions to Embryology | Historic Disclaimer | Cardiovascular Development | Respiratory Development
Congdon ED. Transformation of the aortic-arch system during the development of the human embryo. (1922) Contrib. Embryol., Carnegie Inst. Wash. Publ 277, 14:47-110.
Cite this page: Hill, M.A. (2021, March 4) Embryology Congdon1922-18-25.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Congdon1922-18-25.jpg
- © Dr Mark Hill 2021, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
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|current||09:26, 1 September 2012||1,200 × 795 (179 KB)||Z8600021|
|18:05, 7 May 2011||1,153 × 746 (165 KB)||S8600021||==Figs. 18 to 25. The descent of the fourth aortic arch and the definitive aortic arch into the thorax== Shown in relation to the cervical vertebrae and ribs. Legend * Asterisk - so-called fifth aortic arch * 4 - fourth aortic arch * d. a. - definitive|