Thyroid isthmus
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| Thyroid isthmus | |
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| The thyroid gland and its relations. (Isthmus visible at center.) | |
| Latin | isthmus glandulae thyroideae |
| Gray's | subject #272 1270 |
The thyroid isthmus 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.
External links [edit]
- SUNY Figs 26:01-07 - "Diagram of the relationship of the thyroid gland to the larynx."
- lesson5 at The Anatomy Lesson by Wesley Norman (Georgetown University) (antthyroidgland)
- Diagram (large)
- Diagram (small)
This article incorporates text from a public domain edition of Gray's Anatomy.
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