It is heart.
Heart?
Lung. It's an organ, but it's part of the body nonetheless...
The largest or most important part of an organ is called the "parenchyma." This term refers to the functional tissue of an organ responsible for its specialized functions.
No it is a part of the optic nerve.
Kidney is an organ of our body. The Kidney is an important Excretory organ in the body which helps in separating waste matter from the blood stream and purifies blood by helping in passing of urine.
Hypertrophy is an enlargement of an organ or a body part. Hypertrophy is an enlargement of an organ or a body part.
shin
bum
limb
The heart, the organ that sends blood throught your body so you can survive.
organ
brain