Its parafollicular cells produce calcitonin, and when it is overactive in producing a similarly named hormone, weight loss and rapid heartbeat can result.
Zuckerkandl's tubercle is a pyramidal extension of this body component. Another key feature of this structure is Berry's ligament. Hurthle cells are associated with Hashimoto's disease, an autoimmune disorder affecting this structure.  Its parafollicular cells produce calcitonin, and when it is overactive in producing a similarly named hormone, weight loss and rapid heartbeat can result. A more well-known disease associated with it is Graves' disease, and a lack of iodine can cause the enlargement of it. For 10 points, name this endocrine gland in the neck that is afflicted by goiters.
Zuckerkandl's tubercle is a pyramidal extension of this body component.
thyroid gland