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BACKGROUND: Initiation of each heart beat is at sino-atrial (S.A) node and then it is transmitted to atrio-ventricular (A.V) node. The nodal arteries usually arise from Right Coronary Artery (RCA). The present study would be of use to cardiologists and interventional radiologist during invasive & non-invasive procedures. AIMS: The aim of the study is to investigate the anatomical variance in nodal arteries in human hearts. MATERIAL & METHODS: Study included 110 human hearts of both sexes between the ages of 20 to70 years obtained from Maharashtra were dissected to study coronary arteries. The S.A nodal and A.V nodal arteries were studied in detail in terms of their origin, course, diameter & length. RESULTS: In the study we found that S.A.node was supplied by RCA in 99 hearts and from left coronary artery (LCA) in 11 hearts while A.V node was supplied RCA in 77 hearts and by LCA in 32 hearts. In one heart it was supplied by both the coronary arteries. CONCLUSION: The data extracted from this study will be helpful for cardiac surgeons during atrial surgical interventions, radiologists and anatomists.

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Aim and Objectives: To measure, calculate, find out variations and finally compare the pattern of talar articular facets of different human calcanei. Materials and Methods: 50 adult human calcanei were obtained irrespective of age and sex and evaluated one by one. Three types of calcaneus that has distinct talar facets as Types A, B and C and sub types were defined. Results: The study reveals the following results; Out of 50 calcanei 13 were of Type A (26%) 37 were of Type B (74%) and None were of Type C. The mean intersecting angle of Type A calcaneum is 121.50 and The mean intersecting angle of Type B calcaneum is 151.60 Conclusion: This study reveals that the talar facet configuration of calcanei and angle between the anterior and middle facet influences the stability of the subtalar joint.