Zebrafish - Pharyngula Period: Difference between revisions
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[http://www.youtube.com/watch?v=0hGT667ktTw Short video of a Zebrafish Twitching] | |||
[http://www.youtube.com/watch?v=5ygcu9BRXI0 Video of a Zebrafish embryo heart beating] | |||
[http://php.med.unsw.edu.au/embryology/index.php?title=2009_Group_Project_3 Zebrafish homepage] | [http://php.med.unsw.edu.au/embryology/index.php?title=2009_Group_Project_3 Zebrafish homepage] | ||
Revision as of 14:14, 20 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
- Nervous system is hollow and expanding anteriorly
- The brain has developed into 5 distinct lobes
- Seven pharyngeal arch's develop rapidly during this stage
- Pectorial 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
Short video of a Zebrafish Twitching
Video of a Zebrafish embryo heart beating
