Template:Carnegie stage table: Difference between revisions
From Embryology
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| width="65" |<center> 13 - 15</center> | | width="65" |<center> 13 - 15</center> | ||
| width="101" |<center> 0.2</center> | | width="101" |<center> 0.2</center> | ||
| width="100" bgcolor="#000000" | | | width="100" bgcolor="#000000" |[[File:Human_embryo_16-18_days_02.jpg|60px|Link=Carnegie_stage_6]]</center> | ||
| width="400" | extraembryonic mesoderm, primitive streak | | width="400" | extraembryonic mesoderm, primitive streak | ||
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Revision as of 14:23, 7 June 2011
Carnegie Stage Table
(not to scale) |
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fertilized oocyte, pronuclei | ||||
cell division with reduction in cytoplasmic volume, formation of inner and outer cell mass | ||||
loss of zona pellucida, free blastocyst | ||||
attaching blastocyst | ||||
(week 2) |
implantation | |||
extraembryonic mesoderm, primitive streak | ||||
gastrulation, notochordal process | ||||
primitive pit, notochordal canal | ||||
Somite Number 1 - 3 neural folds, cardiac primordium, head fold | ||||
Somite Number 4 - 12 neural fold fuses | ||||
Somite Number 13 - 20 rostral neuropore closes | ||||
Somite Number 21 - 29 caudal neuropore closes | ||||
Somite Number 30 leg buds, lens placode, pharyngeal arches | ||||
lens pit, optic cup | ||||
lens vesicle, nasal pit, hand plate | ||||
nasal pits moved ventrally, auricular hillocks, foot plate | ||||
finger rays | ||||
ossification commences | ||||
straightening of trunk | ||||
upper limbs longer and bent at elbow | ||||
hands and feet turned inward | ||||
eyelids, external ears | ||||
rounded head, body and limbs | ||||