Abstract

The intertruncal glomera have a solely systemic arterial blood supply through branches of the coronary arteries and aorta. There is no supply from the pulmonary circulation to support the concept of a 'glomus pulmonale' representing a true chemoreceptor of the sixth branchial arch. The intertruncal arteries have the histological structure of typical muscular systemic arteries until they come into proximity with glomera. There they show an abrupt change into an elastic structure believed to be associated with a baroreceptor function.

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