Carnegie stage table
From Embryology
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fertilized oocyte, zygote, pronuclei | |||
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morula cell division with reduction in cytoplasmic volume, blastocyst formation of inner and outer cell mass | |||
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loss of zona pellucida, free blastocyst | |||
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attaching blastocyst | |||
(week 2) |
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implantation | ||
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extraembryonic mesoderm, primitive streak, gastrulation | |||
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gastrulation, notochordal process | |||
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primitive pit, notochordal canal | |||
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Somitogenesis Somite Number 1 - 3 neural folds, cardiac primordium, head fold | |||
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Somite Number 4 - 12 neural fold fuses | |||
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Somite Number 13 - 20 rostral neuropore closes | |||
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Somite Number 21 - 29 caudal neuropore closes | |||
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Somite Number 30 leg buds, lens placode, pharyngeal arches | |||
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lens pit, optic cup | |||
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lens vesicle, nasal pit, hand plate | |||
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nasal pits moved ventrally, auricular hillocks, foot plate | |||
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finger rays | |||
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ossification commences | |||
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straightening of trunk | |||
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upper limbs longer and bent at elbow | |||
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hands and feet turned inward | |||
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eyelids, external ears | |||
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rounded head, body and limbs | |||
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Cite this page: Hill, M.A. (2024, June 14) Embryology Carnegie stage table. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_table
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G