The heart is located within the rib cage (see fig. 1), under and slightly to the left of the breastbone (sternum). It approximately the size of a clenched fist (see fig. 2). The lungs surround the right and left side of the heart (see fig. 3).
Figure 1: The heart with nearby bony landmarks.
Figure 2: The heart location inside the chest.
Figure 3: Lungs surrounding the heart.
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