The heart is about the size of your fist and is located sub-sternal, center thoracic, superior to the stomach with the apex on the left.
In English, it is behind and slightly to the left of your breastbone.
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The heart is approximately the size of your fist and is located in the middle/left part of your chest.
The heart is located in the mediastinum, in the center of the chest. It contains cardiac muscle fibers.
the heart is a sensitive organ it is located at the center of chest,behind the breastbone and at the center of the lungs.it is a busy pump.it weighs about 0.5 kilograms.it is a cone shaped.l it is as big as your fist.
The sino-atrial node (or SA node) is located in the right atrium, just below the entrance of the superior vena cava in the upper right portion of the right atrium.
the av bundle (aka Bundle of His (pronounced like 'hiss'))