structure of thyroid gland
All rights reserved. The thyroid is a butterfly-shaped gland that sits low on the front of the neck. Your thyroid lies below your Adamâs apple, along the front of the windpipe. The thyroid has two side lobes, connected by a bridge (isthmus) in the middle.he thyroid secretes several hormones, collectively called thyroid hormones. The main hormone is thyroxine, also called T4. Thyroid hormones act throughout the body, influencing metabolism, growth and development, and body temperature.