Difference between revisions of "Template:Hewer1935 table 2"

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! Motor nerve endings
 
! Motor nerve endings
 
! Human (approximate age) weeks  
 
! Human (approximate age) weeks  
! Chick (Tello)  (approximate age) days
+
! [[Chicken Development|Chick]] (Tello)  (approximate age) days
 
|-
 
|-
 
| Beginning differentiation  
 
| Beginning differentiation  
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| -
 
| -
 
| —  
 
| —  
| [[Week 10|10]]-[[Week 12|12]]  
+
| [[Week 10|10]]-[[Fetal Development - 12 Weeks|12]]  
 
| 7  
 
| 7  
 
|-
 
|-
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| —  
 
| —  
 
| —  
 
| —  
| [[Week 12|12]]  
+
| [[Fetal Development - 12 Weeks|12]]  
 
| 10  
 
| 10  
 
|-
 
|-
 
|  
 
|  
| Beginning Pacinian bodies
+
| Beginning {{Pacinian corpuscle}}
 
| —  
 
| —  
| [[Week 20|20]]  
+
| [[Second Trimester|20]]  
 
| 11  
 
| 11  
 
|-bgcolor="F5FAFF"
 
|-bgcolor="F5FAFF"
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| —  
 
| —  
 
| -  
 
| -  
| [[Week 12|12]]-[[Week 22|22]]  
+
| [[Fetal Development - 12 Weeks|12]]-[[Second Trimester|22]]  
 
| 9-13  
 
| 9-13  
 
|-
 
|-
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| Spindles differentiate
 
| Spindles differentiate
 
| -
 
| -
| [[Week 20|20]]  
+
| [[Second Trimester|20]]  
 
| 12  
 
| 12  
 
|-bgcolor="F5FAFF"
 
|-bgcolor="F5FAFF"
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| Spindles become complex
 
| Spindles become complex
 
| —  
 
| —  
| [[Week 22|22]]-[[Week 26|26]]  
+
| [[Second Trimester|22]]-[[Third Trimester|26]]  
 
| 13
 
| 13
 
|-
 
|-
 
|  
 
|  
| Pacinian bodies well developed
+
| {{Pacinian corpuscle}} well developed
 
| —  
 
| —  
| [[Week 26|26]]-[[Week 28|28]]  
+
| [[Third Trimester|26]]-[[Third Trimester|28]]  
 
| 15   
 
| 15   
 
|-bgcolor="F5FAFF"
 
|-bgcolor="F5FAFF"
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|
 
|
 
| Plates begin to differentiate
 
| Plates begin to differentiate
| [[Week 26|26]]-[[Week 28|28]]  (very rudimentary except tongue)
+
| [[Third Trimester|26]]-[[Third Trimester|28]]  (very rudimentary except tongue)
 
| 18
 
| 18
 
|-
 
|-
| Data: Hewer (1935)<ref name=Hewer1935>{{Ref-Hewer1935}}</ref>
+
| colspan=5|Data: Hewer (1935)<ref name=Hewer1935>{{Ref-Hewer1935}}</ref> (human weeks appear to be fertilization age based on CRL)&nbsp;&nbsp;&nbsp;'''Links:''' {{timeline}} | {{chicken}} | {{skeletal muscle}}
 
|}<noinclude>[[Category:Template]][[Category:Table]][[Category:Historic Embryology]][[Category:1930's]][[Category:Neural]][[Category:Timeline]]</noinclude>
 
|}<noinclude>[[Category:Template]][[Category:Table]][[Category:Historic Embryology]][[Category:1930's]][[Category:Neural]][[Category:Timeline]]</noinclude>

Latest revision as of 11:01, 27 June 2018

Comparison Human and Chick Neural Endings Timeline
Striped muscle and tendon Sensory nerve endings Motor nerve endings Human (approximate age) weeks Chick (Tello) (approximate age) days
Beginning differentiation 7 5
Myofibrils appear Exploratory fibres with bulbous endings penetrate into muscles 8 6
Great increase of connective tissue. Vast numbers of nuclei - - - 6-7
Isolated “fat” fibres - 10-12 7
Varicose endings in contact with myotubes - 10
Tendon fibres diflerentiate 12 10
Beginning pacinian corpuscle 20 11
Multiplication of myotubes - 12-22 9-13
Spindles differentiate - 20 12
Dissociation of myotubes from one another. Nuclei become peripheral Spindles become complex 22-26 13
pacinian corpuscle well developed 26-28 15
Plates begin to differentiate 26-28 (very rudimentary except tongue) 18
Data: Hewer (1935)[1] (human weeks appear to be fertilization age based on CRL)   Links: timeline | chicken | skeletal muscle