Related Experiment Video
Updated: Jun 21, 2026

In vivo Characterization of Endocrine Disrupting Chemical Effects via Thyroid Hormone Action Indicator Mouse
Published on: October 6, 2023
[The weight of the thyroid in Icelanders. A study based on 197 accidentally dead individuals.]
Objective:
The objective of the present study was to ascertain whether the weight of the thyroid gland had increased in comparison with older studies. The thyroid in Icelanders has been considered small, an opinion based on two different studies, one from 1939 and the other from 1967-1976.
Material And Methods:
The thyroids of 197 individuals who died accidentally in the period from March 1984 to September 1985. The thyroids were weighed fresh.
Conclusion:
The weight of the thyroid in Icelanders has increased. In this study no attempt was made to speculate on what might be the most likely cause for the increased weight of the thyroid in Icelanders.
Related Concept Videos
The Thyroid Gland
The follicles have a central cavity lined by simple cuboidal to squamous epithelial cells called follicular cells. These cells produce the glycoprotein...
Hyperthyroidism I: Introduction
Graves' Disease I: Introduction
Graves Disease II: Pathophysiology
Hypothyroidism II: Pathophysiology
Synthesis and Regulation of Thyroid Hormones
Upon reaching the thyroid gland, TSH stimulates the follicular cells' active uptake of iodide ions from the blood. The ions diffuse to the apical surface of the cells and are oxidized to iodine. The iodine is then...
