Structure of the aortic wall in the guinea pig and rat
Braz. j. morphol. sci
;
21(1): 35-38, Jan.-Mar. 2004. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-658764
ABSTRACT
The segmental microscopic architecture of the aortic wall of guinea pigs and albino rats was studied at the thoracicascending (T2-3), thoracic descending (T6-7) and abdominal infrarenal (L5-6) levels. Variables such as layer thickness,the number of elastic lamellae in the medial layer, and the diameter of the aortic segments were analyzedhistomorphometrically. The aortic wall of both species showed the usual elastic pattern, although variable amounts ofelastic lamellae, collagen fibers and smooth muscle cells were observed in the segmental analyses. A marked reductionin the number of elastic lamellae in the medial layer and in vascular diameter was observed in the abdominal aorticsegment of both species. Intimal folds, a gradual decrease in elastic lamellae from the ascending to the aorta abdominalaorta and a meshwork of adventitial collagen fibers and elastic lamellae were observed. These data indicate that thereare small but significant segmental variations in the aortic wall of these two species.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Aorta
/
Aorta Torácica
/
Colágeno
/
Tecido Elástico
Limite:
Animais
Idioma:
Inglês
Revista:
Braz. j. morphol. sci
Assunto da revista:
Anatomia
Ano de publicação:
2004
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Paulista State University (UNESP)/BR
/
Western State University of Paraná/BR
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