Lipid Definition Lipids are class of naturally-occurring organic compounds that you may know by their common names: fats and oils. A key characteristic of this group of compounds is that they are not soluble in water.
Ultrasound. 1  normal thyroid gland has an homogenous appearance, the capsule may appear as a thin hyperechoic line. 2  each lobe normally measures 4 length: 4-7 cm. depth: <2 cm. 3  volume (excluding isthmus, unless its thickness is > 3mm) 6 10-15 ml for females. 12-18 ml for males.
What is the Normal Size of the Thyroid Gland. The normal size, or range of size, of the thyroid gland in adults is 4 to 4.8 cm x 1.0 to 1.8 cm x 0.8 to1.6 cm. As mentioned above, the thyroid gland is one of the largest endocrine glands found in humans.The weight of this gland in neonates is about 2-3 grams.In case of adults, the normal weight of the thyroid gland should be in between 18-20 grams. The size of the thyroid gland can increase due to certain conditions like pregnancy or smoking frequently.These conditions are not termed as abnormal.he weight of this gland in neonates is about 2-3 grams. In case of adults, the normal weight of the thyroid gland should be in between 18-20 grams. The size of the thyroid gland can increase due to certain conditions like pregnancy or smoking frequently. These conditions are not termed as abnormal.