Zebrafish - Pharyngula Period: Difference between revisions
From Embryology
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* Notochord is well developed | * Notochord is well developed | ||
* Formation of the Dorsal and Ventral Stripe | |||
* Nervous system is hollow and expanding anteriorly | * Nervous system is hollow and expanding anteriorly | ||
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* Seven pharyngeal arch's develop rapidly during this stage | * 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 | * The Circulatory system develops and the heart beats for the first time | ||
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* Blood begins to circulate through a closed circuit of channels | * Blood begins to circulate through a closed circuit of channels | ||
* Tactile sensitivity appears and uncoordinated movements | * Tactile sensitivity appears and uncoordinated movements occur | ||
[http://www.youtube.com/watch?v=5ygcu9BRXI0 Video of a Zebrafish embryo heart beating] | [http://www.youtube.com/watch?v=5ygcu9BRXI0 Video of a Zebrafish embryo heart beating] | ||
Revision as of 03:37, 24 September 2009
Pharyngula Period
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
