The areolar tissue located in the skin binds the outer layers of the skin to the muscles beneath. Areolar tissue is also found in or around mucous membranes, and around blood vessels, nerves, and the organs of the body.
A heart is a symbol of love. A heart shape is a symbol of love and compassion. The heart has long been used as a symbol to refer to the spiritual, emotional, moral, and in the past also intellectual core of a human being.
The first known depiction of a heart as a symbol of romantic love dates to the 1250s. It occurs in a miniature decorating a capital 'S' in a manuscript of the French Roman de la poire (National Library FR MS. 2086, plate 12).