Ch 18 Fishes

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Across
  1. 5. type of paired fin closest to the head
  2. 7. only known living marine sarcopterygian, informally
  3. 14. swim _______; pneumatic sac adaptation for buoyancy in water
  4. 15. renal exchange from filtrate to blood; keeps H2O and ions in
  5. 17. clade of ray-finned fishes; e.g. tuna or swordfish
  6. 19. pneumatic sac adaptation for terrestrial respiration
  7. 21. a skull with more than one movable joint is this
  8. 22. unpaired fin providing thrust for fast swimming
  9. 24. an outdated clade of fish "without jaws"
  10. 26. last 8 letters of shark class
  11. 27. nitrogenous waste at high levels in shark tissues
  12. 31. hagfish heart with cardiac muscle
  13. 33. excretory organ of a fish
  14. 35. letters 1-5 of the lamprey class
  15. 36. type of paired fin closest to tail
  16. 37. osmo_______; animal with same osmolarity as habitat
  17. 38. sinus ______; part of fish heart that receives blood from body
  18. 41. _____ ceca; increases surface area in a tuna's GI tract
  19. 42. letters 11-14 of the lamprey class
  20. 47. "mouth" part of jawed fishes superclass
  21. 48. osmo_______; animal with osmolarity different from environment
  22. 51. "new wing" clade of bony fish; most species in vertebrata
  23. 52. clade of sharks, skates, and rays; "plate gills"
  24. 53. _____ valve; increases surface area in a shark's GI tract
  25. 54. gill cover of bony fish and holocephalii
Down
  1. 1. lamprey larval stage
  2. 2. functional unit of a fish kidney
  3. 3. _____water; habitat that is hypoosmotic to all fish
  4. 4. semicircular ____; structure of fishy equilibrium
  5. 6. the famous "fishapod" part tetrapod part fish!
  6. 8. shark scale type; source of shark teeth
  7. 9. basal bony fish clade members; e.g. sturgeon and paddlefish
  8. 10. pharyngeal arch that gave rise to jaws
  9. 11. antipredatory gland of myxini clade
  10. 12. part of fish heart that pumps blood to conus arteriosus
  11. 13. a male shark's copulatory organ
  12. 15. gill ventilation with mouth open
  13. 16. chondrichthian that has an operculum
  14. 18. clade of lobe-finned fishes; sister to tetrapoda
  15. 20. _____ arteriosus; part of fish heart directing blood to the gills
  16. 23. first 6 letters of shark class
  17. 25. renal exchange from blood to filtrate; puts wastes into filtrate
  18. 28. geological period when fish took to the land!
  19. 29. letters 6-10 of the lamprey class
  20. 30. unpaired fin on a fish's back
  21. 32. only known living freshwater sarcopterygian, informally
  22. 34. a craniate with bone are cartilage around nerve cord
  23. 37. common opening of fish digestive, reproductive, and excretory systems
  24. 39. circulatory route seen in all fishes
  25. 40. part of fish heart that helps fill ventricle
  26. 41. circulatory route seen in sarcopterygia but not actinopterygia
  27. 43. an invertebrate craniate
  28. 44. "jawed" part of jawed fishes superclass
  29. 45. a chordate with a skull
  30. 46. part of fish gill with capillaries
  31. 49. evolutionary fate of first gill in all sharks but one
  32. 50. fish habitat that is hyperosmotic to most fish