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17 Cards in this Set
- Front
- Back
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Vertebrate |
Animals with backbone Less than 5% of all animals |
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Invertebrates |
Animals without a backbone More than 95% of all animals |
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Symmetry |
An arrangement of body pars around a central axis |
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Radial symmetry |
Similar parts branch out in all directions from a central axis Have a top and bottom but no left and right |
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Bilateral symmetry |
Head and tail end left and right |
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Ectoderm |
Layer covering the surface and embryo |
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Mesoderm |
Forms muscles bones and most other organs |
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Endoderm |
Development of digestion tubes |
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Sperm |
Spwcilized for movement head contains chromosomes |
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Egg |
Typically large store of cytoplaam and yolk |
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How many chromosomes in humans |
Egg(23)+Sperm (23)=46 chromosomes in humans |
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Zygote |
Fertilized egg of sexual reproduction |
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Gametogenesis |
Production of gametes |
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Spermatogenesis |
The production of mature Sperm |
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Hematopoitic stem cells |
Blood cells |
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Mesenchymal stem cells |
Muscles bone |
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Endodermal stem cells |
Organs |
