File:Boyd1950 fig10.jpg

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Fig. 10. Section through developing thyroid tissue in 145 mm. human foetus

Colloid in well-established follicles is well shown. The larger spaces lined by endothelium are lymphatic in nature.

Online Editor - Fetus 145mm is about 16 weeks (GA 18 weeks).

Fetal Development - Length - Weight
Gestational age Fertilization age Length Mass
(LMP) (GA weeks) (weeks) (cm) (g)
8 (embryonic) 6 1.6 (crown to rump) 1
9 7 2.3 2
10 8 3.1 4
11 (fetal) 9 4.1 7
12 10 5.4 14
13 (second trimester) 11 7.4 23
14 12 8.7 43
15 13 10.1 70
16 14 11.6 100
17 15 13 140
18 16 14.2 190
19 17 15.3 240
20 18 16.4
25.6 (crown to heel)
300
21 19 26.7 360
22 20 27.8 430
23 21 28.9 501
24 22 30 600
25 23 34.6 660
26 24 35.6 760
27 25 36.6 875
28 (third trimester) 26 37.6 1005
29 27 38.6 1153
30 28 39.9 1319
31 29 41.1 1502
32 30 42.4 1702
33 31 43.7 1918
34 32 45 2146
35 33 46.2 2383
36 34 47.4 2622
37 35 48.6 2859
38 36 49.8 3083
39 37 50.7 3288
40 38 51.2 3462
41 39 51.7 3597
42 40 51.5 3685
References

<pubmed>2361065</pubmed> <pubmed>12548377</pubmed> <pubmed>16891202</pubmed>


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Pages where the terms "Historic Textbook" and "Historic Embryology" appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms and interpretations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)
Links: fig 1 | fig 2 | fig 3a | fig 3b | fig 4 | fig 5 | fig 6 | fig 7 | fig 8 | fig 9 | fig 10 | 1950 Boyd | Thyroid | Parathyroid | Thymus‎ | Historic Papers

Reference

Boyd JD. Development of the thyroid and parathyroid glands and the thymus. (1950) Ann R Coll Surg Engl. 7(6): 455-71. PMID 14790564


Cite this page: Hill, M.A. (2019, February 22) Embryology Boyd1950 fig10.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Boyd1950_fig10.jpg

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© Dr Mark Hill 2019, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G

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