Right border of hea is formed by ?
Correct Answer: Right atrium
Description: External features of hea The hea has following borders and surfaces :- A) Borders i) Right border :- Formed by right atrium. ii) Left border (obtuse margin):- Formed mainly by left ventricle and paly by left auricle (in its upper most pa). iii) Inferior border (acute margin):- Formed mainly by right ventricle and paly by left ventricle near apex. iv) Upper border :- Mainly by left atrium and paly by right atrium where SVC enters. v) Apex :- Formed by left ventricle. B) Surfaces i) Anterior (sternocostal) surface :- Formed mostly by right ventricle (major) and right auricle and paly by left ventricle and left auricle. ii) Inferior (diaphragmatic) surface :- It is formed by left ventricle (left 2/3) and right ventricle (right 1/3). It is traversed by posterior interventricular groove (PIV) containing PIV branch of RCA.
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