Template:Human embryo Meyer 300 table: Difference between revisions

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Human Embryo No. 300
Collection of Dr. Robert Meyer, Berlin. Carnegie stage 12
Desig.	Size	Age	Body form	Primitive streak	Primitive segments	Chorda	Nervous system	Eye	Ear	Nose	Hypophysis	Mouth	Digestive trac, liver and pancreas	Branchial pouches, threoid thymus, trachea and lungs	Urogenital system	Heart and vessels	Integument	Skeleton	Extremities	Amnion	Allantois	Remarks
7 N.T. Fig. VI 1, VI r ind VI v.	Gr. L. 2.5 mm.			Remains of primitive streak. Cloacal membrane.	23 pairs of primitive segments.	Chorda separated from entoderm,	Anterior neuropore closed. but its position still recognizable. Medullary canal stili wide open for a stretch caudally. Roof of 4th vent, beginning to thin out. Neuromeres. Trigeminus and acustico-facialis ganglia distinct.	Optic vesicles. Mesoderm between ectoderm and optic vesicle,	Auditory vesicle almost closed (open through 4 or 5 sections of 5μ). Ductus endolymphaticus not yet visible.		Anlage doubtful.	Pharyngeal membrane just torn, still abundant remains of it.	Intestine still communicates widely with the yolk sack. Liver a thick-walled sack from which the trabeculse are beginning to bud.	The 3 anterior branchial pouches reacts the ectoderm; the 4th, though formed, does not. Thyreoidea mediana formed. Pulmotracheal groove. The paired condition of the pulmonary anlage already indicated.	Rudimentary "pronephric anlage"	Heart S-shaped.					Allantoic duct	The embryo was obtained by operation.
Remarks - Abundant mitoses in the embryo. Fixation: ? Stain: Borax carmine. Sections: 5 μ. The embryo was modelled by Dr. Peter Thompson (1907) Also Meyer, Rob., Ueber die Beziehung der Umierenkanal- chen zum Colomepithel, etc., Anat. Anz., Vol. 25, 1904;
Reference: Keibel F. and Elze C. *Normal Plates of the Development of the Human Embryo (Homo sapiens). (1908) Vol. 8 in series by Keibel F. Normal plates of the development of vertebrates (Normentafeln zur Entwicklungsgeschichte der Wirbelthiere) Fisher, Jena., Germany. Cited in: 1912 Human Embryology and Thompson P. Description of a human embryo of twenty-three paired somites. (1907) J Anat Physiol, 41(3):159-71. PMID 17232726 Meyer AW. On the structure of the human umbilical vesicle*. (1904) J. Anat. 3(2):155-166.
1908 Embryo Tables: Klb (stage 10) \| Pfannenstiel III (stage 11) \| Meyer 300 (stage 12)

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 | valign=top| The embryo was obtained by operation.
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-| colspan=22| '''Remarks''' -  Abundant mitoses in the embryo. Fixation: ? Stain: Borax carmine. Sections: 5 μ. The embryo was modelled by Dr. Peter Thompson, Cf. Thompson, P., Description of a Human Embryo, etc., Joum. of Anat. and Phys., Vol. 41, 1907. Also Meyer, Rob., Ueber die Beziehung der Umierenkanal- chen zum Colomepithel, etc., Anat. Anz., Vol. 25, 1904;
+| colspan=22| '''Remarks''' -  Abundant mitoses in the embryo. Fixation: ? Stain: Borax carmine. Sections: 5 μ. The embryo was modelled by Dr. Peter Thompson (1907) Also Meyer, Rob., Ueber die Beziehung der Umierenkanal- chen zum Colomepithel, etc., Anat. Anz., Vol. 25, 1904;
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 | colspan=22| '''Reference:''' {{Ref-Keibel1908}}<br>Cited in: [[Book - Manual of Human Embryology 20|1912 Human Embryology]] and
-{{Ref-Thompson1907}}
+{{Ref-Thompson1907}} {{Ref-Meyer1904}}
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 | colspan=22| [[Book - Normal Plates of the Development of Vertebrates 8|'''1908 Embryo Tables''']]: [[Template:Human embryo Klb table|Klb]] ([[Carnegie stage 10|stage 10]]) | [[Template:Human embryo Pfannenstiel III table|Pfannenstiel III]] ([[Carnegie stage 11|stage 11]]) | [[Template:Human embryo Meyer 300 table|Meyer 300]] ([[Carnegie stage 12|stage 12]])
 |}<noinclude>[[Category:Template]][[Category:Table]][[Category:Human Embryo]][[Category:Historic Embryology]][[Category:Carnegie Stage 12]]</noinclude>