Die reptielhart as oorgangstadium: ’n kort oorsig

Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie/South African Journal of Science and Technology

 
 
Field Value
 
Title Die reptielhart as oorgangstadium: ’n kort oorsig The reptile heart as transitional stage : A brief review
 
Creator Visser, M. H. C.
 
Subject — — — —
Description Die evolusionêre implikasies van die anatomie en funksie van lepidosauriër - en archosauriër - tipe harte word bespreek. In die lig van die kladistiese werkswyse is die aanvaarding dat 'n lepidosauriër-tipe hart, as sulks, oorsprong kon gegee het aan ’n archosauriër-tipe hart, te bevraagteken. Die interventrikulere septum, regter atrioventrikulêre kleppe en geleidingsisteem van die hart van krokodille, voels en soogdiere word uitgewys as gebiede waar homologieë nog onduidelik is. Die ontwikkeling van die hart en aortaboë by “reptiele”, voëls en soogdiere word op ’n kladogram voorgestel wat ooreenstem met een gebaseer op fossielgegewens asook sagte anatomiese karakters. The anatomical and functional significance for evolution of a lepidosaurian - and archosaurian-type of heart are discussed. In the light of cladistics the acceptance of a lepidosaurian-type of heart, as such, as ancestral to an archosaurian type, is questioned. The interventricular septum, right atrioventricular valves and conducting system of the heart of crocodilians, birds and mammals are pointed out as areas where homologies are uncertain. The evolutionary development of the heart and aortic arches of reptiles, birds and mammals is summarised in a cladogram corresponding with one based on characters derived from fossils as well as data derived from soft anatomical characters.
 
Publisher AOSIS
 
Contributor — —
Date 1995-07-10
 
Type info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion — — — —
Format application/pdf
Identifier 10.4102/satnt.v14i2.606
 
Source Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie; Vol 14, No 2 (1995); 39-47 Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie; Vol 14, No 2 (1995); 39-47 2222-4173 0254-3486
 
Language eng
 
Relation
The following web links (URLs) may trigger a file download or direct you to an alternative webpage to gain access to a publication file format of the published article:

https://journals.satnt.aosis.co.za/index.php/satnt/article/view/606/1091
 
Coverage — — — — — —
Rights Copyright (c) 1995 M. H. C. Visser https://creativecommons.org/licenses/by/4.0
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