A normal adult thyroid gland weighs 10 to 20 g and receives blood from bilateral superior and inferior thyroid arteries and a small artery called the thyroid ima. The thyroid secretes two hormones. Thyroxine (T 4) makes about 90% of hormone production, and triiodothyronine (T 3) produces the other 10%.
Fast Growing Cold Hardy Tree. - Grows up to 5 ft per year! The Quaking Aspen is well known for thriving in cold climates and poor soil... but it's also a brightly colored tree with many desirable characteristics.
Identifying characteristics: Growth Type: Perhaps one of the most important survival trees in the Eastern forest. Pinus strobus is the tallest tree in Eastern North American. It can grow to a height of 160 - 190 feet tall. There are accounts of the pre-colonial eastern white pines reaching 230 feet tall. Height: Can reach heights of 160 - 190 feet. Leaves: Needles, which grow in sets of 5 needles per fascicle.