The human thyrocervical trunk: Configuration and variability reinvestigated

Lischka, Martin F.; Krammer, Eva B.; Rath, Thomas; Riedl, Maria; Ellböck, Elisabeth

doi:10.1007/bf00305554

Cited by 32 publications

(31 citation statements)

References 16 publications

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“…Very rarely has a situation such as ours been described where the inferior thyroid artery arises from a vertebral artery, which, in turn, is derived from the aortic arch (Adachi, 1928;Sartor et al, 1980). Variations in the pattern of branches originating from the thyrocervical trunk are, however, frequent (Lischka et al, 1982). A thyroidea ima is frequently present (9.6%) (Adachi, 1928).…”

Section: Discussionmentioning

confidence: 98%

Complex anomalies of the human aortic arch system: Unique case with both vertebral arteries as additional branches of the aortic arch

Schwarzacher

Krammer

1989

Anat. Rec.

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We describe a case of an aortic arch with five primary branches arising in a sequence that has previously never been reported. From right to left, the brachiocephalic trunk and left common carotid, left vertebral, and subclavian arteries originated from the convexity of the aortic arch. The last branch was the right vertebral artery that arose from the dorsal aspect of the aortic arch opposite the ligamentum arteriosum. Presenting a dilatation at its commencement, the right vertebral ran to the right behind the esophagus and entered the foramen transversarium of the seventh cervical vertebra, whereas the left vertebral passed to the foramen transversarium of the fifth cervical vertebra. The left vertebral artery gave off the left thyroid artery; a thyrocervical trunk was absent on the left side. A thyroidea ima arose from the brachiocephalic trunk. The embryology of this complex anomaly as well as its potential clinical significance are discussed.

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Section: Discussionmentioning

confidence: 98%

Complex anomalies of the human aortic arch system: Unique case with both vertebral arteries as additional branches of the aortic arch

Schwarzacher

Krammer

1989

Anat. Rec.

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“…Two pairs of arteries are involved in the vascularization of the larynx (1,15,16,21,(29)(30)(31)(32)(33) (Figs 4, 5). The superior thyroid artery arises as the first ventral branch of the external carotid artery.…”

Section: Arterial Supply and Gross Innervation Of The Larynxmentioning

confidence: 99%

“…In the majority of individuals studied so far, the inferior thyroid artery was seen to be the main branch of the thyrocervical trunk, which, in turn, originates from the first or thoracic part of the subclavian artery (1,16,21,(29)(30)(31). It first arches upwards, then downwards to reach the inferior border of the lobe of the thyroid gland (16,21).…”

Section: Arterial Supply and Gross Innervation Of The Larynxmentioning

confidence: 99%

Functional Anatomy of the Human Intrinsic Laryngeal Muscles

Pretterklieber

2003

Eur Surg

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Background: Since the beginning of the Christian era, numerous reports have dealt with the construction and functional organization of the larynx, thus stressing its role as the keystone of vocalization in vertebrates. The purpose of this review is to provide a comprehensive summary of basic anatomical facts and to point out certain new aspects of the innervation of laryngeal muscles. Methods: The data presented herein were collected from a preliminary gross anatomical study performed in six human individuals at our institute, and from published literature. Results: The basic framework of the human larynx is composed of the hyaline thyroid, cricoid and arytenoid cartilages, the fibroelastic epiglottis and the hyoid bone. Two pairs of synovial articulations, i.e. the cricothyroid and cricoarytenoid joints, provide the mobility needed to adjust the tension of the vocal ligaments. The intrinsic laryngeal muscles may be divided into three functional groups: (i) muscles varying the rima glottidis (the transverse arytenoid as well as the lateral and posterior cricoarytenoid muscles); (ii) muscles regulating tension in the vocal ligaments (i.e. the cricothyroid, posterior cricoarytenoid as well as the compound thyroarytenoid and vocalis muscles) and (iii) muscles modifying the laryngeal inlet (the so-called 'sphincter aditus', which is formed by the oblique arytenoid and aryepiglottic muscles and counteracted by the thyroepiglottic muscle). They are innervated by the superior and inferior laryngeal nerves branching off the vagus nerve. The external branch of the superior laryngeal nerve exclusively supplies the cricothyroid muscle. There is strong evidence that the lateral cricoarytenoid and the thyroarytenoid muscles are solely supplied by the inferior laryngeal nerve. All other intrinsic laryngeal muscles seem to receive motor fibres either from both laryngeal nerves or from the internal branch of the superior laryngeal nerve alone. Conclusions: Thus, the traditional concept of motor innervation of the larynx seems to be out of date. In fact, the internal branch of the superior laryngeal nerve should no longer be seen as purely sensory but rather -as also the inferior laryngeal nerve -as a mixed nerve containing sensory as well as motor fibres. (Eur. Surg. 2003; 35:250-258) Funktionelle Anatomie der menschlichen Kehlkopfmuskeln Zusammenfassung: Grundlagen: Schon seit dem Beginn unserer Zeitrechnung haben sich viele Forscher mit den verschiedenen Aspekten des Aufbaus und der funktionellen Organisation des Kehlkopfes auseinandergesetzt. Dieses Interesse resultiert aus seiner bedeutenden Position als Grundlage der Stimmgebung bei Mensch und Tier. Aufgabe dieser Übersichtsarbeit ist es, eine Zusammenfassung der anatomischen Fakten zu präsentieren und einige neue Aspekte der motorischen Innervation der Kehlkopfmuskeln aufzuzeigen. Methodik: Die vorliegenden Daten entstammen einer noch nicht abgeschlossenen anatomischen Studie, die an sechs menschlichen Individuen an unserem Institut durchgeführt wurde. Weitere Angaben w...

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“…Moreover, Henriquez-Pino et al found that the right ITA originated as a single trunk from the SCA in 95 % of total cases [16]. Lischka et al (1982) [26] mentioned that in a considerable incidence of 10 % the left ITA originated from the TCT, while the right ITA had the same origin only in 2 %. They also highlighted that in some cases ITA may give off branches usually classified as TCT branches.…”

Section: Discussionmentioning

confidence: 99%

Abnormal origin of internal thoracic artery from the thyrocervical trunk: surgical considerations

Paraskevas

Natsis

Tzika

et al. 2012

J Cardiothorac Surg

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An unusual case of left internal thoracic artery (ITA) origin from the thyrocervical trunk (TCT) was detected during routine cadaver dissection. The variability of origin and course of ITA has less or more frequently been documented in the literature. However, the ITA origin from the TCT on the left side has been detected less commonly, making its dissection and preparation during coronary artery bypass grafting surgery more difficult. We discuss the ITA origin and course variability as well as clinical significance of the present variant, reviewing the relative literature. The objective of our study is to exhibit a rare ITA origin in order to provide a more accurate knowledge of such variations.

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The human thyrocervical trunk: Configuration and variability reinvestigated

Cited by 32 publications

References 16 publications

Complex anomalies of the human aortic arch system: Unique case with both vertebral arteries as additional branches of the aortic arch

Complex anomalies of the human aortic arch system: Unique case with both vertebral arteries as additional branches of the aortic arch

Functional Anatomy of the Human Intrinsic Laryngeal Muscles

Abnormal origin of internal thoracic artery from the thyrocervical trunk: surgical considerations

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