Anatomical hierarchy

General Anatomy > Endocrine glands > Thyroid gland > Isthmus o fthyroid gland

Translations

Description

The isthmus (isthmus gl. thyreoidea) connects together the lower thirds of the lobes; it measures about 1.25 cm. in breadth, and the same in depth, and usually covers the second and third rings of the trachea. Its situation and size present, however, many variations. In the middle line of the neck it is covered by the skin and fascia, and close to the middle line, on either side, by the Sternothyreoideus. Across its upper border runs an anastomotic branch uniting the two superior thyroid arteries; at its lower border are the inferior thyroid veins. Sometimes the isthmus is altogether wanting.


Images

Download e-Anatomy

Mobile and tablet users, you can download e-Anatomy on Appstore or GooglePlay.

e-Anatomy on Appstore e-Anatomy on Googleplay