- Thyroid isthmus
Name = PAGENAME
Latin = isthmus glandulae thyroideae
GraySubject = 272
GrayPage = 1270
Caption = The
thyroid glandand its relations. (Isthmus visible at center.)
DorlandsPre = i_14
DorlandsSuf = 12462815
thyroidisthmus 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
Across its upper border runs an anastomotic branch uniting the two
superior thyroid arteries; at its lower border are the inferior thyroid veins.
* - "Diagram of the relationship of the thyroid gland to the larynx."
* [http://anatquest.nlm.nih.gov/VisibleHuman/ImageData/Rendered/jpg/DSR110229583.jpgDiagram (large)]
* [http://www.biotech.um.edu.mt/home_pages/chris/endocrine/endocrineHTml/thyroid1.htm Diagram (small)]
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thyroid isthmus — isthmus of thyroid gland i. glandulae thyroideae … Medical dictionary
Thyroid — Infobox Anatomy Name = Thyroid Latin = glandula thyroidea GraySubject = 272 GrayPage = 1269 Caption = Endocrine system Caption2 = Thyroid and parathyroid. Precursor = 4th Branchial pouch System = endocinal jubachina system Artery = superior… … Wikipedia
thyroid gland — n THYROID (1) * * * a large endocrine gland situated in the base of the neck. It consists of two lobes, one on either side of the trachea, that are joined by an isthmus (sometimes a third lobe extends upwards from the isthmus). The thyroid gland… … Medical dictionary
isthmus — [is′məs] n. pl. isthmuses or isthmi [is′mī΄] [L < Gr isthmos, a neck, narrow passage, isthmus] 1. a narrow strip of land having water at each side and connecting two larger bodies of land 2. Anat. a) a narrow strip of tissue connecting two… … English World dictionary
Thyroid — Schilddrüse und Nebenschilddrüsen beim Menschen Die Schilddrüse (lat. Glandula thyr(e)oidea) ist eine Hormondrüse bei den Wirbeltieren. Sie befindet sich bei Säugetieren am Hals unterhalb des Kehlkopfes vor der Luftröhre. Beim Menschen hat sie… … Deutsch Wikipedia
isthmus glandulae thyroideae — [TA] isthmus of thyroid gland: the band of tissue connecting the lobes of the thyroid gland. Called also thyroid i. Isthmus glandulae thyroideae (isthmus of thyroid gland) connecting the two lobes … Medical dictionary
thyroid gland — a large endocrine gland situated in the base of the neck. It consists of two lobes, one on either side of the trachea, that are joined by an isthmus (sometimes a third lobe extends upwards from the isthmus). The thyroid gland consists of a large… … The new mediacal dictionary
isthmus — 1. A constriction in the embryonic neural tube delineating the anterior portion of the rhombencephalon, the future metencephalon, form the more rostrally located mesenephalon. 2. SYN: rhombencephalic i.. [G. isthmos] i. of aorta SYN … Medical dictionary
isthmus — n. a constricted or narrowed part of an organ or tissue, such as the band of thyroid tissue connecting the two lobes of the thyroid gland … The new mediacal dictionary
thyroid gland — /ˈθaɪrɔɪd glænd / (say thuyroyd gland) noun a bilobate ductless gland lying on either side of the windpipe or trachea and connected below the larynx by a thin isthmus of tissue. Its internal secretion is important in regulating the rate of… … Australian English dictionary