File:Congdon1922-18-25.jpg
From Embryology
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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.
File history
Yi efo/eka'e gwa ebo wo le nyangagi wuncin ye kamina wunga tinya nan
| Gwalagizhi | Nyangagi | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 09:26, 1 September 2012 | | 1,200 × 795 (179 KB) | Z8600021 (talk | contribs) | |
| 18:05, 7 Mayıs 2011 |  | 1,153 × 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 |
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