File:Heart conduction system-bird-monotreme-placental.jpg

From Embryology

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Heart Conduction System- Bird, Monotreme and Placental

"It is interesting to compare the septal disposition of the right limb of the auriculo-ventricular bundle in the monotreme heart with that in the avian heart on the one hand and with that in the heart of the placental mammal on the other. The present study shows that the right limb of the auriculo-ventricular bundle in the monotreme heart, which reaches the free wall of the right ventricle in the form of five branches, is intermediate in its arrangement on the right side of the ventricular septum between that of the much-branched right limb of the avian bundle and that of the (as usually described) single unbranched right limb of the bundle in the heart of the placental mammal."


(Above text modified from original article)

Abbreviations

  • A.S. - Auricular septum
  • A.V.B. - Auriculo-ventricular bundle
  • A.V.N. - Auriculo-ventricular node
  • B. - Bifurcation of A.-V.bundle
  • C.B. - Branch of right limb of A.-V. bundle to conus arteriosus
  • C.C. - Cartilago cordis
  • En. - Endocardium
  • Ep. - Epicardium
  • F.T. - Falsetendons
  • I.S. - Intersepto-valvular space
  • L.A.C. - Left auricle cavity
  • L.L. - Left limb of A.-V. bundle
  • L.S.V. - Left sinus valve
  • L.V.C. - Left ventricle cavity
  • N.C. - Nerve cells
  • N.P. - Nodal prolongation
  • P.F. - Purkinje fibres
  • R.A.C. - Right auricle cavity
  • R.L. - Right limb of A.-V. bundle
  • R.L.A. - Anterior branch of right limb of A.-v. bundle
  • R.L.P. - Posterior branch of right limb of A.-v. bundle. (P1,P2,P3,P4. Subdivisions of R.L.P.)
  • R.S.V. - Right sinus valve
  • R.V.C. - Right ventricle cavity
  • S.A.N. - Sinu-auricular node
  • S.M.B. - Septomarginal bundle
  • S.P.F. - Sub-endocardial Purkinje fibres
  • V.S. - Ventricular septum

Reference

<pubmed>17104326</pubmed>

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current10:18, 6 May 2011Thumbnail for version as of 10:18, 6 May 20111,040 × 625 (76 KB)S8600021 (talk | contribs)==Heart Conduction System- Bird, Monotreme and Placental== It is interesting to compare the septal disposition of the right limb of the auriculo-ventricular bundle in the monotreme heart with that in the avian heart on the one hand and with that in the h

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