Arcus
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
This 1930s encyclopedia entry defines arcus as a term used primarily for the vascular system to describe an arch-like connection between the ends of two vessels. It also notes its embryological usage as arcus visceralis, designating the mesodermal cords running transversely along the ventral wall of the foregut.
Encyclopedia entry (1928–1936)
ARCUS (Latin), a term most frequently applied to the vascular system to designate an arch-like connection between the ends of two vessels, for example, in the formation of the vascular arches of the mesentery, the plantar arch, the superficial and deep palmar arches, and the like. The embryological term arcus visceralis designates a mesodermal cord running in a transverse direction along the ventral wall of the anterior section of the foregut. There are six such arches on each side.
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“Arcus.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/arcus/