Aim: The purpose of the study was to establish the correlation between length of ulna with height of a person in various age groups and in both sexes. The study also intended to compare the two basic parameters used globally for such correlations, namely multiplication factor (M.F.) and regression equation; and try to comment on the efficacy of one formula over the other.

Biceps brachii is one of the muscles of the anterior compartment of the arm. Normally it has two heads; long head which originates from the supraglenoid tubercle of glenoid cavity and short head from the tip of coracoid process of scapula. During routine Anatomy dissection for first MBBS students, in an adult male cadaver aged approximately 65 years, a biceps brachii muscle with four heads was observed. The short and long heads had their normal origin. In addition to this third head was found to be originating obliquely from the shaft of the humerus along the lateral side of insertion of the coracobrachialis muscle and the fourth head originated from superomedial margin of origin of the brachialis muscle. Both additional heads were directed downwards and laterally and joined the deeper surface of short head. All heads of this variant biceps brachii muscle were supplied by the musculocutaneous nerve. Earlier, Poudel PP and Bhattarai C (2009) reported the presence of 3 rd head in 6.2% and 4 th head also in 6.2% where as Standring (2008) reported the presence of 3 rd head in 10%. Knowledge of the existence of such variations of biceps brachii may be significant in surgeries of the arm in trauma, tumors, etc.

: The left atrium possess a venous component, a vestibule and an appendage and shares the septum. The structure of the heart undergoes constant adaptation to physiologic changes in the organism. LAA is a major endocrine organ and is the main producer of ANP (atrial natriuretic peptide) in the human heart. Atrial cardiocytes of the mammalian heart contain granules which are morphologically similar to those in peptide secreting endocrine cells. The cardiocytes of LAA contain the greatest density of ANF granules found in Left Atrium and it is therefore of interest to carry out further studies on these granules.Looking to the great clinical significance that is given to the morphology of LAA & its predilection as a site for thrombus formation, we’ve conducted a detailed study histologically of LAA. To investigate LAA and study the arrangement of muscle bundles of LAA histologically (with a special stain-Masson’trichome) and these findings were co-related with that described in the literature. The materials for the present study were collected from the Department of Anatomy & Forensic medicine of Sri Aurobindo Medical College and Post Graduate Institute, Indore. Randomly five hearts were selected and slides of LAA from different sites (apex, inferior margin and atrio-auricular junction) were prepared by routine Histological Techniques and stained by Haematoxylin &eosin and Masson’s trichome(special stain)This study of its histological features is an attempt to establish the cause of various pathologies related to arrythmias.

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