Category:Carnegie Embryo 405: Difference between revisions

From Embryology
mNo edit summary
mNo edit summary
 
(2 intermediate revisions by the same user not shown)
Line 2: Line 2:


This embryo was classified as [[Carnegie stage 22]] occurring during [[Week 8]], {{GA}} week 10.
This embryo was classified as [[Carnegie stage 22]] occurring during [[Week 8]], {{GA}} week 10.
<br>
{{Carnegie stage 22 links}}
<br>


{|
{|
Line 18: Line 23:
* ? - unknown or not determined.
* ? - unknown or not determined.
|}
|}
===References===
{{Ref-Kunitomo1920}}
{{Carnegie Collection stage 22 table}}
===Embryo No. {{CE405}}, 26 mm Crown-Rump Length===
{{Ref-Kunitomo1920}}
Embryo No {{CE405}} has 34 vertebrae, as indicated in figure 18. The last one inchnes dorsally from the axis of the vertebral column. Between the thirtieth and thirty-first vertebrae the axis of the ventral column shows a decided angle and below this point bends ventrally, presenting the coccygeal curve which is characteristic of the adult. The chorda dorsalis presents a spindle-shaped swelling at each intervertebral space and its caudal end shows a loop-formation in the thirty-third vertebra. The spinal cord narrows at a level between the thirtieth and thirty-first vertebrae; the atrophic portion, with its narrow canal, is spiral at its caudal end and enters mto the blunt tail-bud. On the dorsal surface of this spiral part of the cord the epidermis is lacking; whether this is due to mechanical injury or is a natural phenomenon could not be determined. From the ventral side two branches of the anterior spinal artery enter. This embryo has 31 spinal ganglia completely supplied with ner\Ts. The middle sacral artery anastomoses through a branch with the anterior spinal artery.
{{Footer}}
[[Category:Carnegie Stage 22]][[Category:Week 8]]
[[Category:1900's]][[Category:Historic Embryology]]

Latest revision as of 17:44, 7 November 2017

This Embryology category includes pages and images that relate to the Carnegie Collection Embryo No. 405 (1907).

This embryo was classified as Carnegie stage 22 occurring during Week 8, GA week 10.


Stage 22 Links: Week 8 | System Development | Lecture - Limb | Lecture - Head Development | Lecture - Sensory | Science Practical - Head | Science Practical - Sensory | Science Practical - Urogenital | Historic - Skull Development | Carnegie Embryos | Madrid Embryos | Category:Carnegie Stage 22 | Next Stage 23
Week 8, GA week 10, 54 - 56 days, CRL 23 - 28 mm, Carnegie Embryos
  Historic Papers: 1914 | 1954 Stage 19-23



Carnegie Collection - Stage 22 
Serial No. Size (mm) Grade Fixative Embedding Medium Plane Thinness (µm) Stain Point Score Sex Year Notes
405 E., 26 Good Formol C Sag. 40 Carmine 42.5 M 1907
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)
  • Stain -
  • ? - unknown or not determined.

References

Kunitomo K. The development and reduction of the tail and of the caudal end of the spinal cord (1920) Contrib. Embryol., Carnegie Inst. Wash. Publ. 272, 9: 163-198.


Carnegie Collection - Stage 22 
Serial No. Size (mm) Grade Fixative Embedding Medium Plane Thinness (µm) Stain Point Score Sex Year Notes
392 E., 23 Ch., 45x45x25 Poor ... P Sagittal 50 Al. coch. 42 Female 1907 Brödel Collection. Injected
405 E., 26 Good Formalin C Sagittal 40 Carmine 42.5 Male 1907
464 E.,26 Ch., 45x40x30 Good Formol? alc? P Sag. 100 Al. coch. 44.5 Male 1910
584A E.,25 Ch., 50x42x40 Poor Formalin P Sagittal 50 Al. coch. 41 ? 1913
630 E., 25 Poor Formalin P Transverse 100 Al. coch. 46 Male 1913
840 E, 24.8 Good Formalin P Transverse 50 Al. coch. 44.5 Female 1914
875 E, 27 Ch., 40x28x22 Good Formalin P Sagittal 40 Al. coch. 45 Male 1914
895 E., 26 Ch., 67x62x54 Good Formalin P Transverse 25 Al. coch. 46.5 Female 1914
1315 E.,25 Good Formalin P Sagittal 50 Al. coch. 40.5 Female 1915 Spina bifida and anencephaly
1458 E., 27.5 Ch, 45x45x30 Exc. Formalin C Sagittal 50 (Stain - Haematoxylin Eosin) aur, or. G. 45.5 Male 1916
1894 E, 24.6 Good Formalin c Sagittal 40,80 (Stain - Haematoxylin Eosin) aur, or. G. 41 Female 1917
2206 E, 27 Ch, 50x30x18 Poor Formalin p Transverse 40 (Stain - Haematoxylin Eosin) 44.5 Male 1918
3681 E, 26.3 Ch, 36x36x34 Good Formalin p Transverse 25 Al. coch. 44.5 Male 1921
4304 E,25 Ch, 66x45x45 Good Bouin p Transverse 20 (Stain - Haematoxylin Eosin) 44.5 Female 1923 Injected
4339 E, 24.5 Good Formalin p Transverse 15 Al. coch, Mallory 46,5 Female 1923
4476 E., 26.2 Good Bouin p Transverse 40 (Stain - Haematoxylin Eosin) 46 Female 1923 Tubal
4638 E, 23.4 Exc. Bouin p Transverse 15,20 Al. coch, or. G. 41.5 Male 1924
6701 E, 24 Poor Formalin p Coronal 20 (Stain - Haematoxylin Eosin) 41 Female 1933
6832 E, 25.8 Exc. Bouin C-P Coronal 20 (Stain - Haematoxylin Eosin) 42 Female 1934
8394 E, 25.3 Ch, 48x50x34 Exc. Bouin C-P Transverse 20 (Stain - Haematoxylin Eosin), Masson 44.5 Female 1946
8948 E, 26.7 Ch, 61x51x50 Poor Formol-Zenker p Transverse 15 Ag ? ? 1952
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)
  • Stain -
  • ? - unknown or not determined.

Embryo No. 405, 26 mm Crown-Rump Length

Kunitomo K. The development and reduction of the tail and of the caudal end of the spinal cord (1920) Contrib. Embryol., Carnegie Inst. Wash. Publ. 272, 9: 163-198.

Embryo No 405 has 34 vertebrae, as indicated in figure 18. The last one inchnes dorsally from the axis of the vertebral column. Between the thirtieth and thirty-first vertebrae the axis of the ventral column shows a decided angle and below this point bends ventrally, presenting the coccygeal curve which is characteristic of the adult. The chorda dorsalis presents a spindle-shaped swelling at each intervertebral space and its caudal end shows a loop-formation in the thirty-third vertebra. The spinal cord narrows at a level between the thirtieth and thirty-first vertebrae; the atrophic portion, with its narrow canal, is spiral at its caudal end and enters mto the blunt tail-bud. On the dorsal surface of this spiral part of the cord the epidermis is lacking; whether this is due to mechanical injury or is a natural phenomenon could not be determined. From the ventral side two branches of the anterior spinal artery enter. This embryo has 31 spinal ganglia completely supplied with ner\Ts. The middle sacral artery anastomoses through a branch with the anterior spinal artery.


Cite this page: Hill, M.A. (2024, March 29) Embryology Carnegie Embryo 405. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Category:Carnegie_Embryo_405

What Links Here?
© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G