Author information Sheela Grace Jeevamani MBBS MS (Anatomy) Professor and Head Department of Anatomy Karpagam Faculty of Medical Sciences and Research Coimbatore, Tamil Nadu, India Formerly, Professor and Head Government Mohan Kumaramangalam Medical College Salem, Tamil Nadu, India T Preethi Ramya MBBS MD (Anatomy) Casual Academic Tutor Discipline of Anatomy and Histology University of Sydney and University of Technology Sydney Sydney, Australia Formerly, Associate Professor Kilpauk Medical College Chennai, Tamil Nadu, India