Chapter 7 & 8: INTEGUMENT and SKELETAL SYSTEM

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Across
  1. 8. If a joint passes through the dermatocranium behind the eye
  2. 10. Ancient chordate structure, support pharyngeal slits in protochordates
  3. 12. Ribs that meet ventrally with the sternum
  4. 13. External naris
  5. 14. Series of cartiliginous or bony elements
  6. 16. Cartiliginous anlagen that give rise to dorsal and ventral arches
  7. 17. Run across the top of the skull and cover the brain beneath
  8. 18. A method by which animal rapidly grasps the prey with its jaws
  9. 21. If a hinge passes across the back of the skull
  10. 22. Largest and most anterior of the modified series of arches
  11. 24. Encircles the external naris and collectively forms the snout
  12. 25. Dorsal arches that protected the neural tube (1)
  13. 26. A bony flap that covered the exit gill slits
  14. 29. Ventral arches enclosing the blood vessels (1)
  15. 32. Long, continous rod of fibrous connective tissue
  16. 33. Arranged serially along the notochord
  17. 34. Lies behind the orbit, completing the posterior wall of the braincase
  18. 35. First cervical vertebra
  19. 37. Equivalent term for the chondrocranium by some morphologists
  20. 38. Abdominal ribs
  21. 39. First step in feeding
Down
  1. 1. An elaborate cartilaginous case around the brain
  2. 2. Branchial arches that support the mouth
  3. 3. Chewing of food
  4. 4. Use of rapid sticky tongue to capture prey
  5. 5. Provide sites for secure muscle attachment and a protective case around viscera
  6. 6. Lies medial to the naris
  7. 7. Consist of ribs and sternal elements
  8. 9. Gulp in water carrying the intended food
  9. 11. Internal naris
  10. 15. Dermal plates of the head joined into a unit
  11. 19. A midventral skeletal structure that is endochondral in embryonic origin
  12. 20. Centra with flat ends
  13. 23. Dorsal arches that protected the neural tube (2)
  14. 27. False ribs articulating with nothing ventrally
  15. 28. Ventral arches enclosing the blood vessels (2)
  16. 30. Centra that are concave anteriorly and convex posteriorly
  17. 31. Continous coat of varrying thickness enclosing the notochord
  18. 33. A composite bony plate forming the floor of the shell within turtles
  19. 36. Ribs that articulate with each other but not with the sternum