File:Congdon1922-18-25.jpg: Difference between revisions

From Embryology
(==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)
(No difference)

Revision as of 17:05, 7 May 2011

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

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current08:26, 1 September 2012Thumbnail for version as of 08:26, 1 September 20121,200 × 795 (179 KB)Z8600021 (talk | contribs)
17:05, 7 May 2011Thumbnail for version as of 17:05, 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