Endocrine System

Thyroid and Parathyroid Glands

What are the physical characteristics of the thyroid gland?

The thyroid gland is located in the neck, anterior to the trachea, just below the larynx (the voice box). It has two lobes connected by a slender bridge of tissue called the isthmus. The average weight of the thyroid gland is 1.2 ounces (34 grams). An extensive, complex blood supply gives the thyroid a deep red color.


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