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Unformatted text preview: e: Gray’s Anatomy of the Human Body, Figure 1178 In short, the thymus is an organ in the lymphatic system i , lying beneath the breastbone near to the heart. 1 It completes its growth prior to the birth of the human and then shrinks thereafter for the remainder of the life of said human. From the bone marrow, stem cells are transported into the thymus. These cells are released into the lymphatic system as T-Lymphocites, known better as T-cells, which is a type of a white blood cell. 2 The thymus is a pinkish-grey, and weighs about 15 grams at birth, grows to about 35 grams by puberty and begins shrinking thereafter, being only about 6 grams by seventy years of age. 3 The thymus is divided into two lobes or halves and three predominant layers: medulla, cortex and capsule, layering respectively from inside to outer layer. The benefits of a t-cell are countless, but simply put, fight toxins in inside to outer layer....
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- Spring '10
- Bone marrow, Duke University Medical, functioning thymus