Exam 1/Quiz 2

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Author:
akm34
ID:
228088
Filename:
Exam 1/Quiz 2
Updated:
2013-07-26 19:03:31
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Skeleton vert everything
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Description:
Skeleton, Vertebrae
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  1. Chondocranium
    Endochonral bone, cartilage, supports and protects brain, form sensory capsules
  2. Dermatocranium
    always bone- formed from dermis, outer casing of skull
  3. Splanchnocranium
    • *brain that grows
    • endochondral bone and/or cartilage,  derivatives of visceral arches, *form neural crest
  4. Upper jaw formed...
    Palatoquadrate
  5. Lower jaw formed...
    Mandibular Cartilage
  6. 1st type jaw suspension, bottom jaw loosely connected to brain case by hyomandibula
    Autostyly
  7. Jaw suspension partially supported by hyomandibula
    Amphystyly
  8. Jaw suspension advanced in fishes- both upper and lower jaw are attached to hyomandibula
    Hyostylic
  9. Hyomandibula has become what in human ear?
    Stapes
  10. Quadrate has become what in human ear?
    Incus
  11. Articular has become what in human?
    Malleus
  12. Notochord
    • Present in sluggish fish
    • Hydrostatic= fluid-filled
  13. Hemal arches
    • Only in tail region
    • Caudal artery and vein run thru there
  14. Subperitoneal rib
    • covers body cavity
    • *to strengthen body wall and prevent collapse
  15. Intermuscular rib/Dorsal rib
    strengthens myosepta (connective tissue) and transfer force from segmental muscles
  16. Main part of vertebrae
    Vertebral centrum
  17. Canal for spinal cord
    Vertebral arch
  18. Hemal arch
    in tail, runs caudal artery and vein
  19. Which vertebrae contain no ribs
    Lombar
  20. Which category of animals have most cervical vertebrae
    Mammals
  21. Evolved from notochord, jelly-like
    Nucleus pulposus
  22. Which vertebrae have ribs
    Trunk vertebrae
  23. 1st cervical vertebrae
    Atlas
  24. Vertebrae missing the centrum
    Atlas
  25. 2nd Cervical vertebrae
    Axis
  26. What acts as the axel from the Axis
    Neural canal acts as axel to 2nd vertebrae- Axis
  27. What mammals do not contain sacral vertebrae
    Dolphin, manatee, whale
  28. What vertebrae are limited in dolphins, whales and manatees
    • Cervical vertebrae- are thin but havent fused
    • -- small and compressed -- minimizes instability and adds power

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