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== Carnegie Stage Table == | == Carnegie Stage Table == | ||
Weeks shown in the table below are embryonic post ovulation age, for clinical Gestational Age ({{GA}}) measured from last menstrual period, add 2 weeks. | |||
{| border="0" | {| border="0" | ||
|-bgcolor="CEDFF2" | |-bgcolor="CEDFF2" | ||
| width="40" | | | width="40" |<center>'''Stage'''</center> | ||
<center>'''Stage'''</center> | | width="65" |<center>'''Days''' (approx)</center> | ||
| width="65" | | | width="101" |<center>'''Size'''</center> <center>(mm)</center> | ||
<center>'''Days''' (approx)</center> | | width="100" |<center>'''Images<br />'''(not to scale)</center> | ||
| width="101" | | | width="400" |<center>'''Events'''</center> | ||
<center>'''Size'''</center> <center>(mm)</center> | |||
| width="100" | | |||
<center>'''Images<br />'''(not to scale)</center> | |||
| width="400" | | |||
<center>'''Events'''</center> | |||
|- | |- | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_1|'''1''']]</center> | ||
<center>'''1'''</center> | | width="65" |<center> 1 </center>([[week 1|'''week 1''']]) | ||
| width="65" | | | width="101" |<center>0.1 - 0.15</center> | ||
<center> 1 </center>('''week 1''') | | width="100" bgcolor="#000000" |<center>[[File:Human_zygote_two_pronuclei_02.jpg|60px|link=Carnegie_stage_1]]</center> | ||
| width="101" | | | width="400" | fertilized oocyte, [[zygote]], pronuclei | ||
<center>0.1 - 0.15</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Human_zygote_two_pronuclei_02.jpg|60px| | |||
| width="400" | | |||
fertilized oocyte, pronuclei | |||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_2|'''2''']]</center> | ||
<center>'''2'''</center> | | width="65" |<center> 2 - 3</center> | ||
| width="65" | | | width="101" |<center>0.1 - 0.2</center> | ||
<center> 2 - 3</center> | | width="100" bgcolor="#000000" |<center>[[File:Human_embryo_day_3.jpg|60px|link=Carnegie_stage_2]]</center> | ||
| width="101" | | | width="400" | [[morula]] cell division with reduction in cytoplasmic volume, [[blastocyst]] formation of inner and outer cell mass | ||
<center>0.1 - 0.2</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Human_embryo_day_3.jpg|60px| | |||
| width="400" | | |||
cell division with reduction in cytoplasmic volume, formation of inner and outer cell mass | |||
|- | |- | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_3|'''3''']]</center> | ||
<center>'''3'''</center> | | width="65" |<center> 4 - 5</center> | ||
| width="65" | | | width="101" |<center>0.1 - 0.2</center> | ||
<center> 4 - 5</center> | | width="100" bgcolor="#000000" |<center>[[File:Human_embryo_day_5.jpg|60px|link=Carnegie_stage_3]]</center> | ||
| width="101" | | | width="400" | loss of zona pellucida, free [[blastocyst]] | ||
<center>0.1 - 0.2</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Human_embryo_day_5.jpg|60px| | |||
| width="400" | | |||
loss of zona pellucida, free blastocyst | |||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_4|'''4''']]</center> | ||
<center>'''4'''</center> | | width="65" |<center> 5 - 6</center> | ||
| width="65" | | | width="101" |<center>0.1 - 0.2</center> | ||
<center> 5 - 6</center> | | width="100" bgcolor="#000000" |<center>[[File:Week2_001_icon.jpg|60px|link=Carnegie_stage_4]]</center> | ||
| width="101" | | | width="400" | attaching [[blastocyst]] | ||
<center>0.1 - 0.2</center> | |||
| width="100" bgcolor="#000000" | | |||
| width="400" | | |||
attaching blastocyst | |||
|- | |- | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_5|'''5''']]</center> | ||
<center>'''5'''</center> | | width="65" |<center> 7 - 12<br /> ([[week 2|'''week 2''']])</center> | ||
| width="65" | | | width="101" |<center> 0.1 - 0.2</center> | ||
<center> 7 - 12<br /> ('''week 2''')</center> | | width="100" bgcolor="#000000" |<center>[[File:Stage5_bf11L.jpg|60px|link=Carnegie_stage_5]]</center> | ||
| width="101" | | | width="400" | [[implantation]] | ||
<center> 0.1 - 0.2</center> | |||
| width="100" bgcolor="#000000" | | |||
| width="400" | | |||
implantation | |||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_6|'''6''']]</center> | ||
<center>'''6'''</center> | | width="65" |<center> 13 - 15</center> | ||
| width="65" | | | width="101" |<center> 0.2</center> | ||
<center> 13 - 15</center> | | width="100" bgcolor="#000000" |<center>[[File:Stage6_bf03.jpg|60px|link=Carnegie_stage_6]]</center> | ||
| width="101" | | | width="400" | extraembryonic mesoderm, primitive streak, [[gastrulation]] | ||
<center> 0.2</center> | |||
| width="100" bgcolor="#000000" | | |||
| width="400" | | |||
extraembryonic mesoderm, primitive streak | |||
|- | |- | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_7|'''7''']]</center> | ||
<center>'''7'''</center> | | width="65" |<center> 15 - 17 </center><center>([[week 3|'''week 3''']])</center> | ||
| width="65" | | | width="101" |<center> 0.4</center> | ||
<center> 15 - 17 </center><center>('''week 3''')</center> | | width="100" bgcolor="#000000" |<center>[[File:Stage7_features.jpg|60px|link=Carnegie_stage_7]]</center> | ||
| width="101" | | | width="400" | [[gastrulation]], [[notochord|notochordal process]] | ||
<center> 0.4</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Stage7_features.jpg|60px| | |||
| width="400" | | |||
gastrulation, notochordal process | |||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_8|'''8''']]</center> | ||
<center>'''8'''</center> | | width="65" |<center> 17 - 19</center> | ||
| width="65" | | | width="101" |<center> 1.0 - 1.5</center> | ||
<center> 17 - 19</center> | | width="100" bgcolor="#000000" |<center>[[File:Stage8_bf4.jpg|60px|link=Carnegie_stage_8]]</center> | ||
| width="101" | | | width="400" |primitive pit, notochordal canal | ||
<center> 1.0 - 1.5</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Stage8_bf4.jpg|60px| | |||
| width="400" | | |||
primitive pit, notochordal canal | |||
|- | |- | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_9|'''9''']]</center> | ||
<center>'''9'''</center> | | width="65" |<center> 19 - 21</center> | ||
| width="65" | | | width="101" |<center> 1.5 - 2.5</center> | ||
<center> 19 - 21</center> | | width="100" bgcolor="#000000" |<center>[[File:Stage9_dorsal.jpg|60px|link=Carnegie_stage_9]]</center> | ||
| width="101" | | | width="400" |[[Somitogenesis]] '''Somite Number 1 - 3''' neural folds, cardiac primordium, head fold | ||
<center> 1.5 - 2.5</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Stage9_dorsal.jpg|60px| | |||
| width="400" | | |||
'''Somite Number 1 - 3''' neural folds, cardiac primordium, head fold | |||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_10|'''10''']]</center> | ||
<center>'''10'''</center> | | width="65" |<center> 22 - 23 </center><center>([[week 4|'''week 4''']])</center> | ||
| width="65" | | | width="101" |<center> 2 - 3.5</center> | ||
<center> 22 - 23 </center><center>('''week 4''')</center> | | width="100" bgcolor="#000000" |<center>[[File:Stage10_bf4b.jpg|60px|link=Carnegie_stage_10]]</center> | ||
| width="101" | | | width="400" |'''Somite Number 4 - 12''' neural fold fuses | ||
<center> 2 - 3.5</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Stage10_bf4b.jpg|60px| | |||
| width="400" | | |||
'''Somite Number 4 - 12''' neural fold fuses | |||
|- | |- | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_11|'''11''']]</center> | ||
<center>'''11'''</center> | | width="65" |<center> 23 - 26</center> | ||
| width="65" | | | width="101" |<center> 2.5 - 4.5</center> | ||
<center> 23 - 26</center> | | width="100" bgcolor="#000000" |<center>[[File:Stage11 bf7b.jpg|60px|link=Carnegie_stage_11]]</center> | ||
| width="101" | | | width="400" |'''Somite Number 13 - 20''' rostral neuropore closes | ||
<center> 2.5 - 4.5</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Stage11 bf7b.jpg|60px| | |||
| width="400" | | |||
'''Somite Number 13 - 20''' rostral neuropore closes | |||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_12|'''12''']]</center> | ||
<center>'''12'''</center> | | width="65" |<center> 26 - 30</center> | ||
| width="65" | | | width="101" |<center> 3 - 5</center> | ||
<center> 26 - 30</center> | | width="100" bgcolor="#000000" |<center>[[File:Stage12 bf5b.jpg|60px|link=Carnegie_stage_12]]</center> | ||
| width="101" | | | width="400" |'''Somite Number 21 - 29''' caudal neuropore closes | ||
<center> 3 - 5</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Stage12 bf5b.jpg|60px| | |||
| width="400" | | |||
'''Somite Number 21 - 29''' caudal neuropore closes | |||
|- | |- | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_13|'''13''']]</center> | ||
<center>'''13'''</center> | | width="65" |<center> 28 - 32 </center>([[week 5|'''week 5''']]) | ||
| width="65" | | | width="101" |<center> 4 - 6</center> | ||
<center> 28 - 32 </center>('''week 5''') | | width="100" bgcolor="#000000" |<center>[[File:Stage13 bf2c.jpg|60px|link=Carnegie_stage_13]]</center> | ||
| width="101" | | | width="400" |'''Somite Number 30''' [[Musculoskeletal_System_-_Limb_Development|leg buds]], lens placode, pharyngeal arches | ||
<center> 4 - 6</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Stage13 bf2c.jpg|60px| | |||
| width="400" | | |||
'''Somite Number 30''' leg buds, lens placode, pharyngeal arches | |||
|- bgcolor="#CCFFCC" | |- bgcolor="#CCFFCC" | ||
| colspan="5" width="376" height="18" | | | colspan="5" width="376" height="18" |<center> [[Carnegie_stage_13_-_serial_sections|Stage 13/14 shown in serial embryo sections]] series of Embryology Program</center> | ||
<center> [[Carnegie_stage_13_-_serial_sections|Stage 13/14 shown in serial embryo sections]] series of Embryology Program</center> | |||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_14|'''14''']]</center> | ||
<center>'''14'''</center> | | width="65" |<center> 31 - 35</center> | ||
| width="65" | | | width="101" |<center> 5 - 7</center> | ||
<center> 31 - 35</center> | | width="100" bgcolor="#000000" |<center>[[File:Stage14_bf2c.jpg|60px|link=Carnegie_stage_14]]</center> | ||
| width="101" | | | width="400" |lens pit, optic cup | ||
<center> 5 - 7</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Stage14_bf2c.jpg|60px| | |||
| width="400" | | |||
lens pit, optic cup | |||
|- | |- | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_15|'''15''']]</center> | ||
<center>'''15'''</center> | | width="65" |<center> 35 - 38</center> | ||
| width="65" | | | width="101" |<center> 7 - 9</center> | ||
<center> 35 - 38</center> | | width="100" bgcolor="#000000" |<center>[[File:Stage15 bf1c.jpg|60px|link=Carnegie_stage_15]]</center> | ||
| width="101" | | | width="400" |lens vesicle, nasal pit, [[Musculoskeletal_System_-_Limb_Development|hand plate]] | ||
<center> 7 - 9</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Stage15 bf1c.jpg|60px| | |||
| width="400" | | |||
lens vesicle, nasal pit, hand plate | |||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_16|'''16''']]</center> | ||
<center>'''16'''</center> | | width="65" |<center> 37 - 42 </center>([[week 6|'''week 6''']]) | ||
| width="65" | | | width="101" |<center> 8 - 11</center> | ||
<center> 37 - 42 </center>('''week 6''') | | width="100" bgcolor="#000000" |<center>[[File:Stage16 bf1c.jpg|60px|Link=Carnegie_stage_16]]</center> | ||
| width="101" | | | width="400" |nasal pits moved ventrally, auricular hillocks, foot plate | ||
<center> 8 - 11</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Stage16 bf1c.jpg|60px|Link=Carnegie_stage_16]]</center> | |||
| width="400" | | |||
nasal pits moved ventrally, auricular hillocks, foot plate | |||
|- | |- | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_17|'''17''']]</center> | ||
<center>'''17'''</center> | | width="65" |<center> 42 - 44</center> | ||
| width="65" | | | width="101" |<center> 11 - 14</center> | ||
<center> 42 - 44</center> | | width="100" bgcolor="#000000" |<center>[[File:Stage17 bf1c.jpg|60px|link=Carnegie_stage_17]]</center> | ||
| width="101" | | | width="400" |finger rays | ||
<center> 11 - 14</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Stage17 bf1c.jpg|60px| | |||
| width="400" | | |||
finger rays | |||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_18|'''18''']]</center> | ||
<center>'''18'''</center> | | width="65" |<center> 44 - 48 </center>([[week 7|'''week 7''']]) | ||
| width="65" | | | width="101" |<center> 13 - 17</center> | ||
<center> 44 - 48 </center>('''week 7''') | | width="100" bgcolor="#000000" |<center>[[File:Stage18 bf1c.jpg|60px|link=Carnegie_stage_18]]</center> | ||
| width="101" | | | width="400" |ossification commences | ||
<center> 13 - 17</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Stage18 bf1c.jpg|60px| | |||
| width="400" | | |||
ossification commences | |||
|- | |- | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_19|'''19''']]</center> | ||
<center>'''19'''</center> | | width="65" |<center> 48 - 51</center> | ||
| width="65" | | | width="101" |<center> 16 - 18</center> | ||
<center> 48 - 51</center> | | width="100" bgcolor="#000000" |<center>[[File:Stage19 bf1c.jpg|60px|link=Carnegie_stage_19]]</center> | ||
| width="101" | | | width="400" |straightening of trunk | ||
<center> 16 - 18</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Stage19 bf1c.jpg|60px| | |||
| width="400" | | |||
straightening of trunk | |||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_20|'''20''']]</center> | ||
<center>'''20'''</center> | | width="65" |<center> 51 - 53 </center>([[week 8|'''week 8''']]) | ||
| width="65" | | | width="101" |<center> 18 - 22</center> | ||
<center> 51 - 53 </center>('''week 8''') | | width="100" bgcolor="#000000" |<center>[[File:Stage20 bf1c.jpg|60px|link=Carnegie_stage_20]]</center> | ||
| width="101" | | | width="400" |[[Musculoskeletal_System_-_Limb_Development|upper limbs]] longer and bent at elbow | ||
<center> 18 - 22</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Stage20 bf1c.jpg|60px| | |||
| width="400" | | |||
upper limbs longer and bent at elbow | |||
|- | |- | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_21|'''21''']]</center> | ||
<center>'''21'''</center> | | width="65" |<center>53 - 54</center> | ||
| width="65" | | | width="101" |<center>22 - 24</center> | ||
<center>53 - 54</center> | | width="100" bgcolor="#000000" |<center>[[File:Stage21 bf1c.jpg|60px|link=Carnegie_stage_21]]</center> | ||
| width="101" | | | width="400" |hands and feet turned inward | ||
<center>22 - 24</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Stage21 bf1c.jpg|60px| | |||
| width="400" | | |||
hands and feet turned inward | |||
|- bgcolor="#FFCCCC" | |- bgcolor="#FFCCCC" | ||
| colspan="5" width="376" | | | colspan="5" width="376" |<center> [[Carnegie_stage_22_-_serial_sections|Stage 22 shown in serial embryo sections series]] of Embryology Program</center> | ||
<center> [[Carnegie_stage_22_-_serial_sections|Stage 22 shown in serial embryo sections series]] of Embryology Program</center> | |||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_22|'''22''']]</center> | ||
<center>'''22'''</center> | | width="65" |<center> 54 - 56</center> | ||
| width="65" | | | width="101" |<center> 23 - 28</center> | ||
<center> 54 - 56</center> | | width="100" bgcolor="#000000" |<center>[[File:Stage22 bf1c.jpg|60px|link=Carnegie_stage_22]]</center> | ||
| width="101" | | | width="400" |eyelids, external ears | ||
<center> 23 - 28</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Stage22 bf1c.jpg|60px| | |||
| width="400" | | |||
eyelids, external ears | |||
|- | |- | ||
| width="40" | | | width="40" |<center>[[Carnegie_stage_23|'''23''']]</center> | ||
<center>'''23'''</center> | | width="65" |<center> 56 - 60</center> | ||
| width="65" | | | width="101" |<center>27 - 31</center> | ||
<center> 56 - 60</center> | | width="100" bgcolor="#000000" |<center>[[File:Stage23 bf1c.jpg|60px|link=Carnegie_stage_23]]</center> | ||
| width="101" | | | width="400" |rounded head, body and [[Musculoskeletal_System_-_Limb_Development|limbs]] | ||
<center>27 - 31</center> | |||
| width="100" bgcolor="#000000" | | |||
<center>[[File:Stage23 bf1c.jpg|60px| | |||
| width="400" | | |||
rounded head, body and limbs | |||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| colspan="5" width="376" | | | colspan="5" width="376" |<center>Following this stage [[Fetal Development]] occurs until birth (approx 37 weeks)</center> | ||
<center>Following this stage [[Fetal Development]] occurs until birth (approx | |||
|} | |} | ||
The embryos shown in the table are from the [[Kyoto Collection|Kyoto]] and [[Carnegie Collection|Carnegie]] collection and other sources.<noinclude>[[Category:Template]]</noinclude> |
Latest revision as of 10:42, 25 November 2015
Carnegie Stage Table
Weeks shown in the table below are embryonic post ovulation age, for clinical Gestational Age (GA) measured from last menstrual period, add 2 weeks.
(not to scale) |
||||
fertilized oocyte, zygote, pronuclei | ||||
morula cell division with reduction in cytoplasmic volume, blastocyst formation of inner and outer cell mass | ||||
loss of zona pellucida, free blastocyst | ||||
attaching blastocyst | ||||
(week 2) |
implantation | |||
extraembryonic mesoderm, primitive streak, gastrulation | ||||
gastrulation, notochordal process | ||||
primitive pit, notochordal canal | ||||
Somitogenesis 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 | ||||
The embryos shown in the table are from the Kyoto and Carnegie collection and other sources.