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2011-02-18 11:39:43

Terms for chapter 41
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  1. Vertabral column
  2. Cranium
    skull that protects the brain
  3. Lampreys and hagfish
    Fish that have elognated, eel like bodies, and they lack jaws, paird fins, and bone
  4. Sharks, Rays, and Skates
    They have paird fins and jaws. the skeloton is made of cartilage, not bone, and their skin is coverd by a unique kind of scale.
  5. Bony fish
    most familiar fishe, that all have jaws, and most have skelotons composed of bone.
  6. Amphibians
    their skin is thin and is premeable to gasses and water. Most species lay their eggs in water.
  7. Reptiles
    Their skin is dry and scaly.
  8. Mammals
    All have hair and nurse their young with milk.
  9. Gill arches
    The skeletal elements that support the pharynx.
  10. Lateral line system
    A prominent adaptation innearly all fish.
  11. External fertilization
    Fertilixation of the egg occures outside the body.
  12. Cartliage
    A flexible lightweight material made of cells surrounded by tough fibers of protein.
  13. Placoid Scales
    Small, toothlike spines that feel like sandpapper.
  14. Pectoral fins
    Jut out of the body like the wings on a plane.
  15. Olfactory Bulbs
    Were the information from the nostirals is analyzed.
  16. Rectal gland
    a gland that removes ecess sodium and chloride ions from the blood and releases them into the rectum for elimination.
  17. Internal fertilization
    Fertilization in wich sperm fuses with the egg inside the females body
  18. Claspers
    A structrue that trasfers sperm in the females body
  19. Bone
    The material that most fishes skelotns are made of
  20. Lungs or swimm Bladder
    • Lungs are the internal respritory organs in wich gass is echanged between air and blood.
    • Swimm Bladder is a gas filled sac used to controll bouyancy.
  21. Scales
    What the skelotons of most fish are made of.
  22. Lobe finned fishes
    Have fleshy fins and are supported by a series of bones.
  23. Ray finned Fish
    have fins that are supported by long, segmented. flexibal bony elements called rays.
  24. operculum
    A hard plate that oppens at the rear and covers and protects the gills.
  25. Caudal fin
    A fin that extends from the tail
  26. Dorsal fins
    Helps keep the fish upright
  27. anal fin
    Helps the fish move in a straight line
  28. Pelvic fins
    Use them to navigate, stop or move up or down, and even back up
  29. Pectoral griddle
    attachment point for the pectoral fins
  30. pelvic griddle
    attchment point for the pelvic points
  31. Esophagus
    Food goes through the esophagus to the stomach
  32. Stomach
    Secreets acid and digestive enzymes that begins to break down food.
  33. Intestine
    Were the nutriens are absorbed
  34. Liver
    Located next to the stomach and secreets bile
  35. Bile
    Helps breakdown fats
  36. Gall Bladder
    Stores bile and releases it into the intestine
  37. Pancreas
    Secreats digestive enzymes into the intestine
  38. Anus
    undigested material is eliminated
  39. Cappilieries
    Thin walled vessels in the gills
  40. Arteries
    the heart pumps blood through this
  41. Sinus venisun
    Deoxygenated blood from the bodie empties into a collecting chamber
  42. atrium
    speeds up the movment of the blood
  43. Ventrical
    Main pumping chamber of the heart
  44. Conus Arteriosus
    contains valves the prvent blood from flowing back into the ventrical
  45. Countercurrent flow
    Allows more oxygen to flow through the gills
  46. Urine
    contains amonia ions such as chloride and sodium and water
  47. Urinary bladder
    Were it is stored and later expelled
  48. Cranial nervs
    Major snsory organs that are conected to the brain
  49. Cerebrum
    Intregate sensory and other types of information from other ares of the brain
  50. optic tectum
    recievs and procces information such as visual and auditory
  51. Cerebellum
    the most posterior division of the brain
  52. Medulla Oblengota
    Helps cordinate motor output
  53. Spinal nervs
    conect the spunal chord to internal organs
  54. Spawning
    Reproductive stage