Category:Carnegie Stage 15

From Embryology

This Embryology category shows pages and media related to Carnegie stage 15 of embryonic development occurring during post fertilisation Week 5 or GA week 7.


There is also a specific Carnegie stage 15 resource page. See also Carnegie Stage 15 - Events


Stage 15 Links: Week 5 | Head | Lecture - Limb | Lecture - Gastrointestinal | Lecture - Head Development | Science Practical - Gastrointestinal | Science Practical - Head | Carnegie Embryos | Category:Carnegie Stage 15 | Next Stage 16
  Historic Papers: 1891 | 1905 Cranial and Spinal Nerves | 1914 | 1926 Precervical Sinus | 1948 stages 15-18


Week: 1 2 3 4 5 6 7 8
Carnegie stage: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23


Carnegie Collection Embryos - Stage 15 
Serial No. Size (mm) Grade Fixative Embedding Medium Plane Thinness (µm) Stain Year Notes
2 E., 7.0 Ch., 25x25x25 Good Alc. P Trans. 15 Al. carm. 1888 Least-advanced third
88 E.,8 Ch., 30x28x15 Poor Alc. P Cor. P Al. coch. 1897
113 E.,8 241 E,6.0 Poor P p Sag. 10 Borax carmine ?
241 E,6.0 Good Formol P Trans. 10 H. & Congo red 1904
371 E,6.6 Good Formol P Sag. 10 Al. coch. 1913 Shrunken and cracked
389 E., 9 Poor p p Sag. 20 (Stain - Haematoxylin Eosin) 1907 Tubal
721 E., 9.0 Ch., 30x20x10 Exc. Zenker formol P Trans. 15 (Stain - Haematoxylin Eosin) 1913 Median in group
810 E., 7.0 Ch, 30x25x15 Good Alc. P Sag. 20 Al. coch 1913
855 E.,7.5 Poor Formol P Trans. 100 Al. coch. 1914 Pathological between limbs
1006 E,9.0 Ch., 37x26x22 Poor Formol P Cor. 20 (Stain - Haematoxylin Eosin) or. G. 1914 Operative. Most-advanced third
1091 E,7.2 Ch., 28x26x20 Poor P P Cor. 20 Al. coch. 1915 Macerated
1354 E,7.8 Ch, 35x30x25 Good Formol P Sag. 20 Al. coch. 1916 Least-advanced third
1767 E , 11.0 Ch, 41x23x5 Good Formol P Sag. 40 (Stain - Haematoxylin Eosin) or. G. 1917 Most-advanced third
2743 E., 7.2 Ch., 19xl8x14 Poor Formol P Trans. 20 Al. coch. 1919 Macerated. Least-advanced third
3216 E, 6.5 Ch, 30x30x5 Good Formol P Trans. 20 Al. coch. 1920 Hysterectomy. Least-advanced third
3385 E,83 Ch., 25x20x16 Exc. Corros. acetic P Trans. 20 (Stain - Haematoxylin Eosin) or. G. 1921 Some sections lost. Most-advanced third. Ag added
3441 E,8.0 Ch., 25x24x20 Good Formol P Sag. 10 Al. coch. 1921
3512 E,8,5 Ch., 33x28x25 Good Formol P Trans. 10 Al. coch. 1921
3952 E,6,7 Ch., 30x25x15 Good Formol P Cor. 15 Al. coch. 1922 Median in group
4602 E,9.3 Ch,, 33x30x26 Good Formol P Sag. 15 Al. coch. 1924 Medical abortion
4782 E,9.0 Ch., I4xl3x11 Poor Formol P Cor. 20 Al. coch. 1924
5772 E, 8 Poor ? P Cor. 15 Al. coch. eosin 1928
Template:CE5?92 E, 3 Good Corros. acetic C-P Cor. 10 Al. coch. phlox 1929 Transitional to next stage
6223 E ? Poor Alc. C-P Sag. 8 Or. G. 1930 Fragmented sections. Not saved
6504
6506
6508
6595
????
Abbreviations
  • Size - E. is the greatest length of the embryo and Ch. is the mean diameter of the chorion.
  • Grade - total grade of the specimen and includes both its original quality and the condition of the mounted sections.
  • Embedding medium - paraffin (P) or a combination of celloidin and paraffin (C-P).
  • Fixative - formalin (Formol), alcohol and formalin (Alc, formol), Bouin (Bouin solution)
  •  ? - unknown or not determined.


Madrid Collection - Stage 15  
Carnegie
Stage
Embryo Days CRL (mm) Section
thickness
Staining Section plane
15 GV4 36 7 8 (Stain - Haematoxylin Eosin) transverse


Embryo Examples

  • Carnegie No. 2, 7 mm. Described in detail by Mall (1891).[1]
  • Hochstetter's embryo I, 7 mm. ( (No. 10 of Hochstetter's series) Described in monographic form by Elze (1907).[2]Includes illustrations of reconstructions. Also shown in Fig. 52 of Keibel and Mall (1910).[3]
  • Legg embryo, 7 mm. Described in detail by Thompson (1915).[4]Includes illustrations of reconstructions.
  • 8-mm embryo. The peripheral nervous system was described by Volcher (1963)[5] in this embryo of stage 15.
  • Keibel No. 1495, 8.5 mm. This advanced example of stage 15 was well described in detail by Barniville (1914)[6].
  • Blechschmidt 7.5 mm Blechschmidt Model generated from serial sections of this embryo.
  • Newcastle N340 Optical Projection Tomography of this embryo described by J. Kerwin etal., (2004).[7]


References

  1. Mall, F. P. 1891. A human embryo twenty-six days old. J. Morph, 5, 459-480.
  2. Elze, C. 1907. Beschreibung eines menschlichen Embryo von zirka 7 mm grosster Lange unter besonderer Beriicksichtigung der Frage nach der Enrwickelung der Extremitatenarterien und nach der morphologischen Bedeutung der lateralen Schilddriisenanlage. (Description of a human embryo of about 7 mm greatest length with special reference to the question of the development of the extremities arteries and to the morphological importance of lateral shield primordia). Anat. Hefte, 106, 411-492.
  3. Keibel F. and Mall FP. Manual of Human Embryology I. (1910) J. B. Lippincott Company, Philadelphia.
  4. Thompson, P. 1915. Description of a human embryo, 7 mm. greatest length. Studies in Anatomy. University of Birmingham, pp. 1-50.
  5. Volcher, R. 1963. Le systeme nerveux périphérique d'un embryon humain de 8 mm.(The peripheral nervous system of an 8 mm. human embryo) Arch. Biol. (Liege), 74, 95-127. PMID 13997757
  6. Barniville HL. The morphology and histology of a human embryo of 8.5 mm. (1914) J Anat Physiol., 49(1):1-71. PMID 17233012
  7. <pubmed>15298700</pubmed>| PMC514604 | BMC Neurosci.

Media in category ‘Carnegie Stage 15’

The following 66 files are in this category, out of 66 total.