The '''heart''' is an [[organ]] that pumps [[blood]] via the [[circulatory system]] to the rest of the body. The heart is a marvelously crafted [[muscle|muscular]] pump and in humans, the heart of an [[embryo]] begins beating 21 days after [[conception]]. According to the [[Bible]] the heart is the seat for our deepest emotions and wishes. Change in personality has been noted in heart transplant survivors consistent with this. | The '''heart''' is an [[organ]] that pumps [[blood]] via the [[circulatory system]] to the rest of the body. The heart is a marvelously crafted [[muscle|muscular]] pump and in humans, the heart of an [[embryo]] begins beating 21 days after [[conception]]. According to the [[Bible]] the heart is the seat for our deepest emotions and wishes. Change in personality has been noted in heart transplant survivors consistent with this. |