Aids to embryology / by J.S. Baxter.

  • James Sinclair Baxter
Date:
1948
Catalogue details

Licence: In copyright

Credit: Aids to embryology / by J.S. Baxter. Source: Wellcome Collection.

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    left pulmonary artery, which remains therefore in communication with the left dorsal aorta through the ductus. When the pulmonary circulation be- comes established after birth the ductus arteriosus Fig. 26.—Scheme to show the Vessels Derived from the: Branchial Arch Arteries. (Adapted from Congdon.) 1, Internal carotid artery; 2, external carotid artery; 3, common carotid artery ; 4, arch of the aorta ; 5, ductus arteriosus ; 6, left subclavian artery; 7, pulmonary artery. The definitive arteries are printed in solid black, the transitory portions in outline. contracts down and is obliterated. It is represented in the adult by the fibrous ligamentum arteriosum. It may now readily be understood why the right and left recurrent laryngeal nerves differ in their course and relations. Initially these nerves arise from their respective vagal trunks immediately caudal to th&
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