File:Congdon1922-18-25.jpg

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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.

Legend

  • 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


Reference

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

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© Dr Mark Hill 2021, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G


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Pages where the terms "Historic" (textbooks, papers, people, recommendations) appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms, interpretations and recommendations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)

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current09:26, 1 September 2012Thumbnail for version as of 09:26, 1 September 20121,200 × 795 (179 KB)Z8600021 (talk | contribs)
18:05, 7 May 2011Thumbnail for version as of 18:05, 7 May 20111,153 × 746 (165 KB)S8600021 (talk | contribs)==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