Jan. 24, 2023
Nearly 3,000 illustrations, including video clips of neurologic disorders.
Every article is reviewed by our esteemed Editorial Board for accuracy and currency.
Full spectrum of neurology in 1,200 comprehensive articles.
Listen to MedLink on the go with Audio versions of each article.
This shows a composite of the positions of the parathyroid glands found in 25 cadavers in relation to the thyroid gland and trachea. The thyroid gland is illustrated as transparent so the parathyroid gland positions can be seen. The brackets on each side show from top to bottom the number found in the upper, middle, and lower thirds of the thyroid gland, and the number beneath the thyroid gland. On each side the “superior” parathyroid gland is shown in outline, and the “inferior” parathyroid gland is shown shaded. Parathyroid glands that could not be classified by location or that were not one of a pair are shown as cross-hatched. Source: Heinbach WF Jr. (1933). (Courtesy of Wikimedia Commons. Public domain.)