Chapter 7 "Skeletal System:The Skull"

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Across
  1. 3. A single or double surface produced primarily within the basioccipital but with contributions from the exoccipitals in some species
  2. 4. Runs across the top of the skull and covers the brain beneath
  3. 6. Forms deep within the body from mesoderm and other sources, not directly from the integument
  4. 7. The mechanical breakdown of a large bolus of food into smaller pieces, usually with the teeth; chewing of food
  5. 12. A kinetic skull with two joints passing transversely through the braincase
  6. 14. Part of the skull arising first to support the pharyngeal slits and later contributing to the jaws and other structures of the head
  7. 15. Refers literally, to movement within the skull
  8. 16. Is formed from or within the integument, the dermis giving rise to bone and the epidermis to keratin
  9. 17. Includes the vertebral column, limbs, girdles, and associated structures, such as ribs and shells
  10. 19. Large notches in the bony braincase
  11. 20. The internal naris; the openings of the nasal passage into the mouth
  12. 22. A joint permitting considerable rotation of articulated skeletal elements, and characterized by a joint capsule, synovial membrane, and articular cartilages on joined elements; synovial joint
  13. 24. Part of the skull formed from dermal bones
  14. 25. Gives the vertebrate body shape, supports its weight, offers a system of levers, and protects soft parts such as nerves, blood vessels, and other viscera
  15. 27. Part of the skull formed by endochondral bone or cartilage that underlies and supports the brain; also includes the fused or associated nasal capsules
  16. 31. The capture of prey with the tongue
  17. 32. A large hole through which the spinal cord runs
  18. 33. Is the largest and most medial of the dermal bones of the primary palate
  19. 34. Skull movement via a transverse hinge that lies posterior between the deep neurocranium and outer dermatocranium
  20. 35. Skull movement via a transverse joint passing through the dermatocranium posterior to the ocular orbit
  21. 36. The hypothesis that jaws evolved from one of the anterior branchial arches
  22. 37. The middle ear bone of mammals derived phylogenetically from the quadrate
  23. 38. Is composed of soft tissues, permitting independent movement of each mandible
Down
  1. 1. A depression within the temporal bone of the braincase
  2. 2. Refers to skull movement via a transverse joint that passes through the dermatocranium anterior to the ocular orbit
  3. 5. Is formed from the fusion of various bones in different species but usually includes the hyomandibula, various pterygoids, and quadrate
  4. 8. Is the anterior tooth-bearing part of the dentary
  5. 9. Is the region between the nasal capsules formed by the fusion of the anterior tips of trabeculae
  6. 10. A method by which the animal rapidly grasps the prey with its jaws
  7. 11. A collective term that refers to the fused cranial components immediately surrounding and encasing the brain.
  8. 13. A skull lacking cranial kinesis, that is, movable joints between skull bones
  9. 18. Takes its name from the nasolacrimal duct of tetrapods that passes through or near this bone
  10. 21. Is a ventral derivative of the splanchnocranium behind the jaws
  11. 22. A pattern of tooth replacement involving only two sets of teeth, usually milk teeth and permanent teeth
  12. 23. Part of the braincase that contains cavities for the brain and associated sensory capsules
  13. 25. The capture of prey by means of a sudden muscular expansion of the buccal cavity that creates a vacuum to draw in water carrying the prey
  14. 26. Skull movement via a single transverse joint passing through the braincase
  15. 28. An opening within the bony braincase
  16. 29. The hypothesis that jaws evolved from several fused anterior branchial arches
  17. 30. The earliest jawed condition