open access

Vol 79, No 1 (2020)
CASE REPORTS
Published online: 2019-05-06
Submitted: 2019-03-20
Accepted: 2019-04-19
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Anatomical description of the aortic arch of a rare species “the giant armadillo” (Priodontes maximus; Kerr, 1792)

R. Santos, M. Fernandes, S. F. de Souza, C. A. dos Santos-Sousa, Y. K. de Carvalho
DOI: 10.5603/FM.a2019.0053
·
Pubmed: 31063200
·
Folia Morphol 2020;79(1):168-171.

open access

Vol 79, No 1 (2020)
CASE REPORTS
Published online: 2019-05-06
Submitted: 2019-03-20
Accepted: 2019-04-19

Abstract

The giant armadillo (Priodontes maximus) is found in diverse habitats from South America. A female adult giant armadillo with a body mass of 45 kg was used. The animal was a victim of trampling on highway AC-40, at 70 km, near the municipality of Capixaba-Acre and the corpse donated to the Animal Anatomy Laboratory at Federal University of Acre (UFAC). The arterial system was filled with natural latex via the thoracic aorta in a direction opposite the blood flow to facilitate the description of the aortic arch and its side branches. The study was approved by CEUA/UFAC – no. 053/2015 and SISBIO no. 47124-1. The aortic arch issued side groups, which had the following sequence: brachycephalic trunk, left carotid artery, left subclavian artery. The brachycephalic trunk forked forming the right subclavian artery and the right common carotid artery. The arrangement allowed the whole carotid blood supply to the brain and surrounding structures present in the animal’s head. The subclavian arteries, of homologous way, originated the arteries: vertebral, thoracic, and cervical costocervical trunk. The aortic arch armadillo showed the same pattern as that described for the Euphractus sexcinctus and different from those reported for the Dasypus novemcinctus and Tamandua tetradactyla. In addition, the function assigned to each branch was the same regardless of the species with which it was compared.

Abstract

The giant armadillo (Priodontes maximus) is found in diverse habitats from South America. A female adult giant armadillo with a body mass of 45 kg was used. The animal was a victim of trampling on highway AC-40, at 70 km, near the municipality of Capixaba-Acre and the corpse donated to the Animal Anatomy Laboratory at Federal University of Acre (UFAC). The arterial system was filled with natural latex via the thoracic aorta in a direction opposite the blood flow to facilitate the description of the aortic arch and its side branches. The study was approved by CEUA/UFAC – no. 053/2015 and SISBIO no. 47124-1. The aortic arch issued side groups, which had the following sequence: brachycephalic trunk, left carotid artery, left subclavian artery. The brachycephalic trunk forked forming the right subclavian artery and the right common carotid artery. The arrangement allowed the whole carotid blood supply to the brain and surrounding structures present in the animal’s head. The subclavian arteries, of homologous way, originated the arteries: vertebral, thoracic, and cervical costocervical trunk. The aortic arch armadillo showed the same pattern as that described for the Euphractus sexcinctus and different from those reported for the Dasypus novemcinctus and Tamandua tetradactyla. In addition, the function assigned to each branch was the same regardless of the species with which it was compared.

Get Citation

Keywords

armadillo, arteries, heart, comparative anatom

About this article
Title

Anatomical description of the aortic arch of a rare species “the giant armadillo” (Priodontes maximus; Kerr, 1792)

Journal

Folia Morphologica

Issue

Vol 79, No 1 (2020)

Pages

168-171

Published online

2019-05-06

DOI

10.5603/FM.a2019.0053

Pubmed

31063200

Bibliographic record

Folia Morphol 2020;79(1):168-171.

Keywords

armadillo
arteries
heart
comparative anatom

Authors

R. Santos
M. Fernandes
S. F. de Souza
C. A. dos Santos-Sousa
Y. K. de Carvalho

References (15)
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