Skeletal System: The Skull - Chapter Seven

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Across
  1. 2. Apparatus that supports the tongue and the floor of the mouth.
  2. 4. Dermal origin where the lower jaw of mammals is composed
  3. 7. They lack bones entirely and specialized for parasitic lives that depend on rasping tongue to scrape tissue for meal
  4. 9. The anterior pair of the head mesenchyme from elongate cartilages
  5. 10. A jaw suspension for modern bony fishes where the mandibular is atteched to the braincase through hyomandibula
  6. 11. Forms the supporting structure of an organism
  7. 12. A jaw suspension where jaws are attached to the braincase
  8. 16. A group of ostracoderns that posses a head shield formed by single piece of arched dermak bone.
  9. 17. A jaw suspension wherein the entire upper jaw is incorporated into the braincase
  10. 20. It suspends the lower jae except for mammals
  11. 23. Bone of the braincase where the lower jaw is suspended
  12. 24. A name for cranium that was inspired by the mistaken view of the splanchnocranium
  13. 27. The posterior pair of the head mesenchyme from elongate cartilages
  14. 28. It formed mostly in the outer casting of the skull
  15. 29. The main body of the hyoid apparatus
  16. 31. These are openings that arise within the region of the outer braincase
  17. 35. It was formed by the hyomandibula that is involved in hearing
  18. 36. These are the branchial arches that support thee mouth
  19. 37. Also known as the "horns" as the extensions of the hyoid apparatus
  20. 39. The jaw suspension wherein jaws are attached to the braincase through quadrate
  21. 40. It is named after the duct of tetrapods that passes through or near the bone
  22. 41. A type of skeletal system formed within the body from mesoderm
  23. 42. It refers to the fused cranial components encasing the brain
  24. 43. An example of mandible where jaw is attached
Down
  1. 1. Refers to all part of skeleton apart from the skull
  2. 3. It's a type of fish where jaws first appeared
  3. 5. The prominent element of the hyoid arch
  4. 6. The unpaired medial dermal bone found mostly in fishes and lower tetrapods
  5. 8. The most ancient part of the cranium that arose to support pharyngeal slits in protochordates
  6. 13. It underlies and supports the brain formed by endochondral bone or cartilage
  7. 14. This is hat mandibular arch is made of
  8. 15. These are cartilages found behind the parachordals
  9. 18. The earliest vertebrates known for their soft tissue impressions
  10. 19. One of the tissues contributing to the endoskeleton
  11. 21. The vertebrate skull
  12. 22. The earliest stage where Agnathans represents how none of the arches attaches were directly to the skull
  13. 25. The anterior tooth-bearing part of the dentary
  14. 26. Includes all the upper portion of the skull
  15. 30. A type of skeletal system formed within the integument
  16. 32. The earliest jaw condition found in accanthodians and placoderms
  17. 33. The region between the nasal capsules
  18. 34. It was used by morphologist as a equivalent term for the chondrocranium
  19. 38. This is found between the otic plates and formed bythe growth of parachordals