Thyroidectomy is used to treat thyroid disorders, such as cancer, noncancerous enlargement of the thyroid (goiter) and overactive thyroid (hyperthyroidism). How much of your thyroid gland is removed during thyroidectomy depends on the reason for surgery.If only a portion is removed (partial thyroidectomy), your thyroid may be able to function normally after surgery.If your entire thyroid is removed (total thyroidectomy), you need daily treatment with thyroid hormone to replace your thyroid's natural function. 1  Why it's done.f only a portion is removed (partial thyroidectomy), your thyroid may be able to function normally after surgery. If your entire thyroid is removed (total thyroidectomy), you need daily treatment with thyroid hormone to replace your thyroid's natural function. 1  Why it's done.
Percent of the brain used. 100 %. Average weight of a human brain. 3 pounds. Average weight of a human brain at birth. 12 ounces. Percent of total body weight that the brain represents. 2 %.
About one thirteenth or 7.5 percent of your body weight is blood. a 13 stone man has about 14 pounds or 4 litres of blood surging around his body. When the body is resting the adult human heart pumps out about 4 litres of blood per minute, this rises to 27 litres per minute under vigorous exercise.