ISSN:
0003-276X
Keywords:
Life and Medical Sciences
;
Cell & Developmental Biology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Medicine
Notes:
The innervation of the aortic arch and associated arterial trunks was investigated in the pig by gross dissection, by microscopic examination of normal arterial walls, and by observation of degenerative changes following selective surgical interruption of right and left cervical vagi. It is concluded that the aortic depressor fibers of the pig are organized unilaterally, being distributed by the left vagus to arterial walls, and by observation of degenerative changes following selective surgical with the absence of a dissectable right aortic nerve, there was no histological evidence of sensory innervation in the walls of the brachiocephalic, right subclavian, bicarotid or right common carotid artery. The majority of depressor endings were located in the ventral wall of the aortic arch in a band extending between the origin of the left subclavian artery and the aortic attachment of the ligamentum arteriosum. A few were present in the dorsal wall of the aortic arch and the ventral walls of the pulmonary trunk and ligamentum arteriosum. The depressor fibers were thick, heavily myelinated, varicose, extensively branched and associated with numerous terminal and intercalated neurofibrillar corpuscles. The only epithelioid body observed was a poorly innervated, rudimentary paraganglion in the interval between the aortic arch, the pulmonary artery and the ligamentum arteriosum.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/ar.1091580107
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