Please provide your kind consideration to the distinction between the "vessels of Wearn." and the "Thebesian veins"
Vessels of Wearn = eponym
Arteriovessels cardiacae minimae
In 1933, Joseph Treolar Wearn utilized macroscopic casting along with serial microscopic sectioning to define arteries of the heart  . Dr. Wearn defined the arteriosinusoidal and arterioluminal vessels (AS/AL-vv) and noted that they have arterial components at their proximal origin and lose their internal elastic lamina and medial smooth muscle as they progress distally becoming simple endothelial lined tubes. Thus, these are referred to as vessels although they have arterial origin. For many years, physicians did not have a pronoun specifically for the Arteriosinusoidal and Arterioluminal vessels when identifying them through radiographic imaging. Since they share some overlap in their size, it often may be inaccurate to refer to an identified arterial vessel as either the sinusoidal or the luminal type.
With no term to define these vessels when identified, some resorted to referring to them as the "vessels of Thebesius." Others referred to them by a more broad term: ventriculocoronary arterial connections (VCACs). VCACs is not a precise term because it could also include a fistula from trauma, which is not usually a vessel. Thus, there was a need for an appropriate term to define the vessels. Wearn was too humble to name them after himself, but had he; there might be less confusion in the literature. Wearn referred to the macroscopic appreciation of them as luminal vessels. If it is considered axiomatic that using the same term for both a single vessel, and a group of vessels could result in ambiguity in the medical literature.
For example, the luminal vessels would have one definition, which is the direct large connections to the heart chambers, and then another definition in which it is used referring to all of the connections between the coronary arteries and heart chambers including the (1) arterioluminal vessels, the (2) arteriosinusoidal arteries
potentially confusing as the
A. "Luminal vessels" would be composed of the
1. Arteriosinusoidal vessels
2. Arterioluminal vessels
A more precise name was applied to the vessels 2012  . The term was named in honor of their discoverer, Joseph T. Wearn. One might state that we should instead call them the "vessels of Vieussens." The author of this article states that such nomenclature might be discussed, but then it would cause more confusion and provide less granularity as the arteriosinusoidal and arterioluminal vessels presumably prevent different clinically. This topic is discussed further in the appendix.
1. ^ Wearn, Joseph T.; Mettier, Stacy R.; Klumpp, Theodore G.; Zschiesche, Louise J. (1 December 1933). "The nature of the vascular communications between the coronary arteries and the chambers of the heart". American Heart Journal 9 (2): 143–164. doi:10.1016/S0002-8703(33)90711-5.
2. ^ Snodgrass, Brett Thomas (1 July 2012). "Vessels Described by Thebesius and Pratt Are Distinct From Those Described by Vieussens and Wearn". The American Journal of Cardiology 110 (1): 160. doi:10.1016/j.amjcard.2012.04.005.
3. ^ Krishnan, U.; Schmitt, M. (31 March 2008). "Persistent Thebesian Sinusoids Presenting as Ischemic Heart Disease". Circulation 117 (16): e315–e316.doi:10.1161/CIRCULATIONAHA.107.748863.
However, that may be less favorable as Vieussens did not provide quantitive measurements of the, nor did he distinguish the myocardial sinusoids from them. If we were to do that, we would no longer have arteriosinusoidal vessels. The distinction of the myocardial sinusoids and the vessels would be described with knowledge that only one who has never prepared micscropic sections of the heart could details.
Lack of an appropriate term for the vessels of Wearn is the probable reason some have referred to them as Thebesian sinusoids. In conclusion, the vessels of Wearn are distinct connections described by Wearn and there is nothing Thebesian or venular about them.
Was a vessel of Wearn present throughout life but unappreciable due to sloughing?
Vessels of Wearn photgraph taken in China. Vessels of Wearn, photo taken in China. It costs some to pay people to do this, but I want to help improve medical research and the cost of inaccurate information on medical literature and researcher's time and money has not been negligible.
Terminologia Anatomica (TA) is the international standard on human anatomic terminology. It was developed by the Federative Committee on Anatomical Terminology (FCAT) and the International Federation of Associations of Anatomists (IFAA) and was released in 1998. It supersedes the previous standard, Nomina Anatomica. Terminologia Anatomica contains terminology for about 7500 human gross (macroscopic) anatomical structures. In April 2011, Terminologia Anatomica was published online by the Federative International Programme on Anatomical Terminologies (FIPAT), the successor of FCAT.