If you need a boy dog name for your Shepherd, check the male German Shepherd names list. Otherwise, take a look at the list of names and meanings below. One more thing . . . my neighbor raises German Shepherds and my favorite of her female German Shepherd names (so far) is Deja. That just seems like a cool dog name.
The heart is a muscular organ about the size of a fist, located just behind and slightly left of the breastbone. The heart pumps blood through the network of arteries and veins called the cardiovascular system.
The right  side receives blood (low in oxygen) from all over the body. The  left side receives (oxygen rich) blood from the lungs. When blood  is pumped all over the body, it loses its oxygen. After being  pumped to all parts of the body, it returns to the heart and enters  the right atrium and right ventricle.