Zebrafish - Pharyngula Period: Difference between revisions
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The duration of this period is from 24 to 48 hours | The duration of this period is from 24 to 48 hours | ||
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[http://www.youtube.com/watch?v=5ygcu9BRXI0 Video of a Zebrafish | [http://www.youtube.com/watch?v=5ygcu9BRXI0 Video of a Zebrafish Embryo Heart Beating] | ||
[http://php.med.unsw.edu.au/embryology/index.php?title=Zygote_Period Zygote Period] / [http://php.med.unsw.edu.au/embryology/index.php?title=Cleavage_Period Cleavage Period] / [http://php.med.unsw.edu.au/embryology/index.php?title=Blastula_Period Blastula Period] / [http://php.med.unsw.edu.au/embryology/index.php?title=Gastrula_Period Gastrula Period] / [http://php.med.unsw.edu.au/embryology/index.php?title=Segmentation_Period Segmentation Period] / [http://php.med.unsw.edu.au/embryology/index.php?title=Hatching_Period Hatching Period] / [http://php.med.unsw.edu.au/embryology/index.php?title=Larval_Period Larval Period | [http://php.med.unsw.edu.au/embryology/index.php?title=Zygote_Period Zygote Period] / [http://php.med.unsw.edu.au/embryology/index.php?title=Cleavage_Period Cleavage Period] / [http://php.med.unsw.edu.au/embryology/index.php?title=Blastula_Period Blastula Period] / [http://php.med.unsw.edu.au/embryology/index.php?title=Gastrula_Period Gastrula Period] / [http://php.med.unsw.edu.au/embryology/index.php?title=Segmentation_Period Segmentation Period] / [http://php.med.unsw.edu.au/embryology/index.php?title=Hatching_Period Hatching Period] / [http://php.med.unsw.edu.au/embryology/index.php?title=Larval_Period Larval Period] / [http://php.med.unsw.edu.au/embryology/index.php?title=2009_Group_Project_3#Timeline_and_Stages_of_Embryonic_Development Home Page ] |
Revision as of 14:38, 14 October 2009
The duration of this period is from 24 to 48 hours
- Transition from Prim 5 to Long-pec
- The body axis begins to straighten and the head straightens out and lifts dorsally
- Notochord is well developed
- Formation of the Dorsal and Ventral Stripe
- Nervous system is hollow and expanding anteriorly
- The brain has developed into 5 distinct lobes
- Seven pharyngeal arch's develop rapidly during this stage
- Pectoral fins begin to develop
- The Circulatory system develops and the heart beats for the first time
- Blood begins to circulate through a closed circuit of channels
- Tactile sensitivity appears and uncoordinated movements occur
Video of a Zebrafish Embryo Heart Beating
Zygote Period / Cleavage Period / Blastula Period / Gastrula Period / Segmentation Period / Hatching Period / Larval Period / Home Page