The instability of a single vortex-row

ABSTRACT DR. HAROLD JEFFREYS, in his letter appearing in NATURE of Aug. 11, p. 206, mentions some interesting practical effects for which the principle to which it refers is responsible. To

those which he mentioned may be added a physiological consequence for the circulation of the blood. As the blood-stream races past the cusps of the valves at the orifices of the heart, some

of the eddies, to quote his words, “enter the dead water, where they produce a circulation with a reverse current” behind each valve. This disposition prevents extreme eversion of the valve,

and facilitates closure of the valve without delay or hindrance so soon as the diastolic check of the stream current ensues, at end of the active beat. The anatomical channel is actually

bayed out (sinus of Valsalva) in the case of the two largest blood-vessels, in order to favour development of what in the letter is termed the second row of vortices. SIMILAR CONTENT BEING

VIEWED BY OTHERS PHYSIOLOGIC BLOOD FLOW IS TURBULENT Article Open access 23 September 2020 TURBULENCE SUPPRESSION BY CARDIAC-CYCLE-INSPIRED DRIVING OF PIPE FLOW Article 06 September 2023

BLOOD–WALL FLUTTERING INSTABILITY AS A PHYSIOMARKER OF THE PROGRESSION OF THORACIC AORTIC ANEURYSMS Article 11 December 2023 ARTICLE PDF AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Oxford

C. S. SHERRINGTON Authors * C. S. SHERRINGTON View author publications You can also search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS

ARTICLE CITE THIS ARTICLE SHERRINGTON, C. The Instability of a Single Vortex-Row. _Nature_ 122, 314 (1928). https://doi.org/10.1038/122314a0 Download citation * Issue Date: 01 September 1928

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