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Open AccessArticle

A Phylogenetic and Ontogenetic Perspective of the Unique Accumulation of Arterial Variations in One Human Anatomic Specimen

Division of Anatomy, Center for Anatomy and Cell Biology, Medical University of Vienna, A-1090 Vienna, Austria
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Medicina 2020, 56(9), 449; https://doi.org/10.3390/medicina56090449
Received: 31 July 2020 / Revised: 1 September 2020 / Accepted: 1 September 2020 / Published: 4 September 2020
(This article belongs to the Special Issue Variational Anatomy and Developmental Anomalies in Clinical Practice)
Background and objectives: Anatomical dissection is an indispensable means of acquiring knowledge about the variability of the human body. We detected the co-existence of several arterial variations within one female anatomic specimen during routine anatomical dissection. The aim of this study was to evaluate if this status is a regular pattern in any of other vertebrates. Materials and Methods: Besides of a meticulous anatomic dissection, we performed a literature review concerning the frequency, the phylogenesis, and ontogenesis of all of these variations. Results: Exceptionally, the middle colic artery arose from an extraordinarily divided celiac trunk. The kidneys received three polar arteries. On the left side, a corona mortis replaced the obturator artery. The aortic arch gave rise to a bicarotid trunk, and the right subclavian artery originated and coursed as a typical lusorial artery leading to a non-recurrent laryngeal nerve on the right side. Furthermore, variations of the branches of the thyrocervical trunk were found to be present. Extraordinarily, in their cervical portion both internal carotid arteries gave rise to two arteries each. All of these variations developed within two to three weeks, around the sixth week of gestation. It was not possible to ascribe all or even one of the variations to a singular species of vertebrates. Conclusion: Apparently, arterial variations are frequently a result of random development. Medical professionals must always be aware of anatomical variations; the absence of such awareness would create major difficulties during surgery. The present case confirms the relevance of anatomical dissection, particularly for medical students. View Full-Text
Keywords: anatomic variation; arteries; phylogeny; ontogeny anatomic variation; arteries; phylogeny; ontogeny
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MDPI and ACS Style

Pretterklieber, B.; Pretterklieber, M.L. A Phylogenetic and Ontogenetic Perspective of the Unique Accumulation of Arterial Variations in One Human Anatomic Specimen. Medicina 2020, 56, 449.

AMA Style

Pretterklieber B, Pretterklieber ML. A Phylogenetic and Ontogenetic Perspective of the Unique Accumulation of Arterial Variations in One Human Anatomic Specimen. Medicina. 2020; 56(9):449.

Chicago/Turabian Style

Pretterklieber, Bettina; Pretterklieber, Michael L. 2020. "A Phylogenetic and Ontogenetic Perspective of the Unique Accumulation of Arterial Variations in One Human Anatomic Specimen" Medicina 56, no. 9: 449.

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