Template:Hewer1935 table 2: Difference between revisions
From Embryology
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| Beginning Pacinian bodies | | Beginning Pacinian bodies | ||
| — | | — | ||
| [[ | | [[Second Trimester|20]] | ||
| 11 | | 11 | ||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
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| — | | — | ||
| - | | - | ||
| [[Fetal Development - 12 Weeks|12]]-[[ | | [[Fetal Development - 12 Weeks|12]]-[[Second Trimester|22]] | ||
| 9-13 | | 9-13 | ||
|- | |- | ||
| Line 58: | Line 58: | ||
| Spindles differentiate | | Spindles differentiate | ||
| - | | - | ||
| [[ | | [[Second Trimester|20]] | ||
| 12 | | 12 | ||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| Line 64: | Line 64: | ||
| Spindles become complex | | Spindles become complex | ||
| — | | — | ||
| [[ | | [[Second Trimester|22]]-[[Third Trimester|26]] | ||
| 13 | | 13 | ||
|- | |- | ||
| Line 70: | Line 70: | ||
| Pacinian bodies well developed | | Pacinian bodies well developed | ||
| — | | — | ||
| [[ | | [[Third Trimester|26]]-[[Third Trimester|28]] | ||
| 15 | | 15 | ||
|-bgcolor="F5FAFF" | |-bgcolor="F5FAFF" | ||
| Line 76: | Line 76: | ||
| | | | ||
| Plates begin to differentiate | | Plates begin to differentiate | ||
| [[ | | [[Third Trimester|26]]-[[Third Trimester|28]] (very rudimentary except tongue) | ||
| 18 | | 18 | ||
|- | |- | ||
| Data: Hewer (1935)<ref name=Hewer1935>{{Ref-Hewer1935}}</ref> | | Data: Hewer (1935)<ref name=Hewer1935>{{Ref-Hewer1935}}</ref> | ||
|}<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> | ||
Revision as of 09:39, 27 June 2018
| 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 bodies | — | 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 bodies well developed | — | 26-28 | 15 | |
| Plates begin to differentiate | 26-28 (very rudimentary except tongue) | 18 | ||
| Data: Hewer (1935)[1] | ||||
- ↑ Hewer EE. The development of nerve endings in the human foetus. (1935) J Anat. 69(3):369-79. PMID 17104543
