NEET PG Medical – 2015 – Question – 52
Right border of heart is formed by ?
a) Right ventricle
b) Right atrium
c) SVC
d) IVC
Show Answer
Correct Answer – B
Ans. (B) Right atrium
External features of heart
The heart has following borders and surfaces :-
A) Borders
- Right border :- Formed by right atrium.
- Left border (obtuse margin):- Formed mainly by left ventricle and partly by left auricle (in its upper most part).
- Inferior border (acute margin):- Formed mainly by right ventricle and partly by left ventricle near apex.
- Upper border :- Mainly by left atrium and partly by right atrium where SVC enters.
- Apex :- Formed by left ventricle.
B) Surfaces - Anterior (stern costal) surface :- Formed mostly by right ventricle (major) and right auricle and partly by left ventricle and left auricle.
- Inferior (diaphragmatic) surface :- It is formed by left ventricle (let 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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