Carnegie stage 16: Difference between revisions
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| colspan=3|Right lateral view of the central nervous system of embryo at Carnegie stage 16. Scale bar is 1 mm | | colspan=3|Right lateral view of the central nervous system of embryo at Carnegie stage 16. Scale bar is 1 mm |
Revision as of 14:39, 6 February 2016
Embryology - 21 May 2024 Expand to Translate |
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Introduction
Facts
Week 6, 37 - 42 days, 8 - 11 mm
Gestational Age GA - week 8
Events
- Ectoderm: sensory placodes, lens pit, otocyst,nasal pits moved ventrally, fourth ventricle of brain
- Mesoderm: heart prominence
- Head: 1st, 2nd and 3rd pharyngeal arch, forebrain, eye, auricular hillocks
- Body: heart, liver, umbilical cord, mesonephric ridge
- Limb: upper and lower limb buds, hand plate, developing arm
Features
- Eye showing retinal pigment, nasolacrimal groove, nasal pit, fourth ventricle of brain, umbilical cord, 1st and 2nd pharyngeal arches, cervical sinus, heart, developing arm with hand plate, foot plate
- Identify: nasal pit, nasolacrimal groove, eye, 1st, 2nd and 3rd pharyngeal arches, 1st pharyngeal groove, maxillary and mandibular components of 1st pharyngeal arch, auricular hillocks, fourth ventricle of brain, heart prominence, upper limb bud, mesonephric ridge, lower limb bud, umbilical cord
- Links: Week 6 | Head | Lecture - Limb | Lecture - Gastrointestinal | Lecture - Head Development | Science Practical - Gastrointestinal | Science Practical - Head | Category:Carnegie Stage 16 | Stage 17
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 Stages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | About Stages | Timeline
Kyoto Collection
View: This is a dorsolateral view of embryo. Amniotic membrane removed.
Image source: Embryology page Created: 19.03.1999
Ventral view of head region. Ventral view of head region (1 mm scale).
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Right lateral view of the central nervous system of embryo at Carnegie stage 16. Scale bar is 1 mm |
Image source: The Kyoto Collection images are reproduced with the permission of Prof. Kohei Shiota and Prof. Shigehito Yamada, Anatomy and Developmental Biology, Kyoto University Graduate School of Medicine, Kyoto, Japan for educational purposes only and cannot be reproduced electronically or in writing without permission.
Scanning EM
Ventral view of head showing upper lip, maxilla and nasal region.
Image Source: Prof Virginia Diewert
Carnegie Collection
Carnegie Collection Embryos - Stage 16 | ||||||||||
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Serial No. | Size (mm) | Grade | Fixative | Embedding Medium | Plane | Thinness (µm) | Stain | Year | Notes | |
163 | E., 9.0 Ch., 35x35x20 | Good | Formol | P | Transverse | 20 | Al. coch. | 1899 | Used by Bardeen and Lewis | |
221 | E., 7.5 Ch., 40x33x33 | Poor | Formalin | P | Sagittal | 20 | Al. coch. | 1903 | Macerated | |
383 | E., 7.0 Ch., 15x15x15 | Poor | Formalin | P | Transverse | 10 | Al. carm., H. & Congo red | 1904 | ||
397 | E., 8.0 Ch., 15x15x15 | Poor | Formalin | P | Transverse | 10 | (Stain - Haematoxylin Eosin) | 1907 | ||
422 | E., 9.0 Ch., 30x30x30 | Poor | Alc. | P | Transverse | 40 | Al. coch. | 1910 | Tubal. Partly macerated | |
559 | E., 8.6 Ch., 20x15x12 | Good | Formalin | P | Transverse | 20 | H. & Congo red | 1911 | Cyclopia. Formerly listed as stage 17 | |
589 | E., 11 Ch., 30x13x13 | Poor | p | P | Sagittal | 50 | Al. coch. | 1912 | ||
617 | E., 7.0 Ch., 18x14x12 | Good | Formalin | P | Transverse | 15 | Al. coch. | 1912 | Median in group | |
636 | E., 10 Ch.,28x28x22 | Poor | Formalin | P | Transverse | 50 | Al. coch. | 1913 | Macerated | |
651f | E., 7 Ch., 25x20x15 | Poor | p | p | p | p | p | 1913 | Spina bifida | |
675 | E., 10 Ch., 50x30x25 | Poor | Formalin | P | Sagittal | 100 | Carmine | 1915 | Abnormal head and limbs | |
792 | E., 8.0 Ch., 40x30x30 | Good | Formalin | P | Transverse | 20 | Al. coch. | 1913 | Advanced | |
887 | E, 9.0 Ch., 31x28x17 | Good | Formalin | P | Transverse | 40 | Al. coch. | 1914 | Near next stage | |
1121 | E., 11.8 | Good | Corros. acetic | P | Coronal | 40 | Al. coch. | 1915 | Operative. Median in group | |
1197 | E., 10.0 Ch., 23x19x15 | Good | Formalin | C | Sagittal | 20 | (Stain - Haematoxylin Eosin), or. G. | 1915 | Advanced | |
1544 | E., 7.2 | Good | Zenker | P | Sagittal | 20 | Al. coch. | 1916 | Tubal. Mechanical injury | |
1836 | E., 11.0 | Good | Formalin | P | Transverse | 20 | (Stain - Haematoxylin Eosin) | 1917 | Most-advanced third | |
4677 | E., 9.5 Ch., 48x36x30 | Good | Formalin | P | Transverse | 10 | Al. coch. | 1924 | Median in group | |
5515 | E., 12.0 Ch., 47x37x25 | Good | Formalin | C-P | Transverse | 10 | (Stain - Haematoxylin Eosin) | 1927 | Near next stage | |
6054 | E., 7,0 Ch., 21x17x12 | Good | Formalin | C-P | Transverse | 8 | (Stain - Haematoxylin Eosin) | 1930 | Least-advanced third | |
6507 | E., 9.0* | Excellent | Corros. acetic | C-P | Coronal | 10 & 8 | Al. coch. | p | Middle or most-advanced third | |
6509 | E. 8.1* | Excellent | Corros. acetic | C-P | Coronal | 10 | Al. coch. | p | Least-adianced or middle third | |
6510 | E., 10.1* | Excellent | Corros. acetic | C-P | Coronal | 10 | Al. coch. | p | Close to No. 6507. Ag added | |
6511 | E, 8.1* | Good | Corros. acetic | C-P | Sagittal | 10 | Al. coch., iron H. | p | Surface injured by fixative. Most-advanced third | |
6512 | E., 7.0* | Excellent | Corros. acetic | C-P | Transverse | 10 | Al. coch. | p | Least-advanced third. Borderline | |
6513 | E., 7.2* | Good | Corros. acetic | C-P | Coronal | 10 | Al. coch. | p | Surface injured by fixative. Least advanced in group | |
6514 | E, 9 0* | Poor | Corros. acetic | C-P | Sagittal | 10 | Al. coch. | p | Most-advanced third | |
6516 | E., 10 5* | Good | Corros acetic | C-P | Sagittal | 8 | Al. coch. | p | Most-advanced third. Double left kidney and ureter | |
6517 | E., 10.5* | Excellent | Corros. acetic | C-P | Transverse | 8 | Al. coch. | ? | Close to No. 6516 | |
6686 | E., 11.0 Ch., l7x17xP | Poor | Formalin | C-P | Coronal | 20 | Al. coch. | 1933 | Tubal. Partly macerated | |
6750 | E., 10.0 | Good | Formalin | C-P | Transverse | 10 | H. & phlox. | 1933 | Tubal. Advanced | |
6909 | E., 11.0 | Good | Bouin | C-P | Coronal | 10 | (Stain - Haematoxylin Eosin) | 1934 | Tubal. Advanced | |
6931 | E., 8.8 Ch., 3""x 33x16 | Good | Formalin | C-P | Coronal | 10 | Al coch., phlox. | 1934 | Least-advanced third. Type specimen | |
6950 | E.. 9 0 Ch., 3lx20x18 | Good | Formalin | C-P | Transverse | 10 | (Stain - Haematoxylin Eosin) | 1934 | Tubal. Partly fragmented | |
7?15 | E., 9.7 | Exc | Bouin | C-P | Coronal | 10 | H. & phlox | 1935 | Operative. Less advanced | |
7629 | E., 11.5 Ch., 31x31 | Good | Formalin | C-P | Coronal | 10 | Al. coch., phlox | 1939 | Hysterectomy. Most advanced in group | |
7804 | E., 9.5 Ch., 26x21x16 | Good | Formalin | C-P | Transverse | 10 | (Stain - Haematoxylin Eosin) | 1940 | Least-advanced third | |
7897 | E., 12.2 Ch., 31x24x23 | Good | Formalin | C-P | Transverse | 10 | (Stain - Haematoxylin Eosin) | 1941 | Tubal. Advanced | |
8098 | E., 10.0 Ch., 30 | Good | Formalin | C-P | Coronal | 6 | (Stain - Haematoxylin Eosin) | 1942 | Tubal. Median in group | |
8112 | E., 10.9 | Excellent | Bouin | C-P | Coronal | 8 | (Stain - Haematoxylin Eosin) | 1943 | Most-advanced third | |
8179 | E., 11.9 Ch., 23x18x17 | Good | Formalin | C-P | Coronal | 10 | (Stain - Haematoxylin Eosin) | 1943 | Tubal | |
8436 | E., 10.9 Ch., 13x15x1? | Good | Formalin | P | Coronal | 10 | Azan | 1946 | Advanced | |
8692 | E., 10 | Good | Bouin | P | Transverse | 10 | (Stain - Haematoxylin Eosin) | 1949 | Rubella. Medical abortion. Mechanically damaged | |
8697 | E., 11.3 | Poor | Formalin | C-P | Transverse | 10 | (Stain - Haematoxylin Eosin) | 1949 | Perhaps stage 17 | |
8773 | E, 11 | Excellent | Bouin | P | Coronal | 10 | Azan | 1950 | ||
8971 | E., 10 Ch., 20.5x14.5x13.7 | Poor | Formalin | Transverse | 15 | (Stain - Haematoxylin Eosin) | 1932 | Synophthalmia. Univ. Chicago No. H 1439 | ||
Template:CE9055 | E., ca. 10 | Excellent | Bouin | P | Transverse | 20 | Azan & Ag | 1953 | Damaged | |
9229 | E, 9.5 | Excellent | Formalin | P | Transverse | 6 | Ag & (Stain - Haematoxylin Eosin) | 1954 | Stage 15, 16, or 17? Mislaid | |
Abbreviations
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iBook - Carnegie Embryos | |
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Madrid Collection
Human Embryo CRL 10.2 mm (stage 16) | Human Embryo CRL 10.5 mm (stage 16) |
Image source: The Madrid Collection images are reproduced with the permission of Prof. Rodríguez-Vázquez, Head, Embryology Institute of Complutense University of Madrid. Images are for educational purposes only and cannot be reproduced electronically or in writing without permission.
Hill Collection
Hill HH8 | |
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Stereo pair animation: right lateral animation | right lateral animation | left lateral animation
Hill HH5 | |
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- Links: Hill Collection
Additional Images
Historic Images
Streeter, G. L. 1908b. The peripheral nervous system in the human embryo at the end of the first month (10 mm). Amer. J. Anat., 8, 285-301.
- Carnegie Stages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | About Stages | Timeline
Cite this page: Hill, M.A. (2024, May 21) Embryology Carnegie stage 16. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_16
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G