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31 Cards in this Set
- Front
- Back
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trabeculae
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anterior region of the cartilage formed by the notochord formed by condensation of the head mesoderm
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amphistylic
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jaw suspension to braincase via 2 major attachments: hyomandibular and palatoquadrate
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synapsid
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in mammals only one opening in braincase
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polar cartilages
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btw. parachordals
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metautostylic
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amphibians, reptiles, and birds- jaws attached to the braincase directly through the quadrate
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kinetic skull
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articulation btw. upper jaw and braincase
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serial theory
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1st 2 branchial arches evolved into jaws
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osteon
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unit of organic salts arranged in a regular and highly ordered unit: it is a concentric ring of bone cells around the central canal through which blood, lymphatic vessels and nerves travel
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zygapophysis
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intertwined apophyses
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intervertebral disc
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called cartilage if not with notochord.
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nucleus pulposus
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part of the intervertebral disc: gel like core that acts as padding
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intercentrum and pleurocentrum serve to...
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anchor and support arches
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occipital arch
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formed by occipitals going around notochord
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aspondyly
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centra absent
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mono/di spondyly
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1/2 centrum
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dermatocranium
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dermal bone: 3rd part of cranial phylogeny- OUTER CASTING OF SKULL
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chondocranium
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underlies and support brain: endochondral bone, cartilage, or both: embryonic structure serving as scaffolding from developing brain and support for sensory capsules
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snakes lizards birds- 2 openings
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diapsid: what animals
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aspidospondyl
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separated centrum
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holospondyl
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fused centrum
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lepospondyl
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pierced by notochord like in camel
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malleus
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articular
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incus
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quadrate
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stapes/columella
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hyomandibular
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meta/meso/pro kinesis
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back/eye hole/front of orbital
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mandibular
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coronoid
angular surangular articular prearticular mandibular symphisis dentary |
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palatal
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pterygoid
ectopterygoid parasphenoid vomer palatine |
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vault
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parietal
postparietal |
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temporal series
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squamosal
quadratojugal intertemporal supratemporal tabular |
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splanchnocranium arises from
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neural crest cells
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occipital cartilages
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behind parachordals
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