File:Thompson plate03.jpg

Plate III. Graphic reconstruction of embryo from serial sections

The endothelial tube only of the heart is shown.

Legend

• n.p., points to place of anterior neuropore
• F.B. - fore-brain
• o.v. - optic vesicle
• M.B. - mid-brain
• I.R. - isthmus rhombencephali
• i-vi - neuromeres of hind-brain H.B.
• t.g. - trigeminal ganglion
• a.f.g. - ganglion acoustico- facialis
• ot. - otocyst
• 1-23 somites
• b.m. - remains of bucco-pharyngeal membrane
• m.t. - median rudiment of thyroid body
• p.1-p.4 - pouches of pharynx P.
• o. - esophagus
• S. - stomach
• L. - liver
• s.t. - septum transversum
• am. - root of amnion
• V.D. - vitelline duct
• M.G. - mid gut
• N. - notoc1ord
• H.G. - hind gut
• C. - cloaca
• al. - allantois
• c.m. - cloacal membrane
• T. - tail
• m.g. - medullary groove
• R.A. and L.A. - right and left auricles
• v. - ventricle
• A.C. - auricular canal
• A.S. - aortic stem
• B.C. - bulbus cordis

(Note. - Neither the left horn of the sinus venosus nor the opening of the transverse piece into the right horn is indicated in the figure.)

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Reference

Thompson P. Description of a human embryo of twenty-three paired somites. (1907) J Anat Physiol, 41(3):159-71. PMID 17232726