- Anatomy a hollow, pumplike organ of blood circulation, composed mainly of rhythmically contractile smooth muscle, located in the chest between the lungs and slightly to the left and consisting of four chambers: a right atrium that receives blood returning from the body via the superior and inferior vena cavae, a right ventricle that pumps the blood through the pulmonary artery to the lungs for oxygenation, a left atrium that receives the oxygenated blood via the pulmonary veins and passes it through the mitral valve, and a left ventricle that pumps the oxygenated blood, via the aorta, throughout the body.
- the center of the total personality, especially with reference to intuition, feeling, or emotion: In your heart you know I’m an honest man.
In Greatest Love, heart is one of the main themes of the show. Dokkojin is seen having heart surgery at the very beginning of the series and even when he becomes a top star, he signs his name with a heart at the end.
The heart symbol becomes more significant as his heart begins to be moved by Gu Ae-jung and beats faster outside of his 60-90 safety zone, initiated by hearing the 두근두근 (Thump-thump) KBSN song and then by Gu Ae-jung herself.
The wardrobe is also influenced by the heart symbol with Gu Ae-jung wearing heart sunglasses and a white heart necklace to Dokkojin and his heart monitor watch (See: heart monitor watch definition below).
The other end of falling in love is also heartbreak. Feeling jealousy for Pil-joo, Dokkojin expresses his heart by singing G-Dragon’s Heartbreaker (G-Dragon’s Heartbreaker MV) and even goes further to show his heart breaking by showing his heart surgery scar.