Bioe122_L Echinodermata.txt

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jgascaco
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208060
Filename:
Bioe122_L Echinodermata.txt
Updated:
2013-03-20 01:54:35
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Bioe122 invertebrate zoology terms echinodermata
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Phylum terms for echinodermata
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  1. Echinodermata
    • "spiny skin"
    • invertebrate deuterostomes
    • true coelomate (enterocoely)
    • mutable tissue
    • pentaramous symetry
    • water vascular symmetry
  2. Echinodermata groups
    • Crinoidea
    • Elutherozoa
  3. Elutherozoa classes and subclasses
    • Class: Asteroidea
    • Subclass: Cryptosyringida
  4. Cryptosyringida classes
    • Ophiuroidea
    • Echinodea
    • Holothurodea
  5. water vascular system
    • network of coelomic canals and podia
    • for locomotion, feeding, respiration, extratory waste disposal
  6. axial organ
    pumping organ for hemal system
  7. perivisceral coelom
    • occupies the disc and arms
    • supplies the viscera with water and nutrients
  8. pedicellaria
    • moveable compound ossicles that function as forceps
    • on surface of asteroids
  9. radial canal
    • WVS
    • canal that connects from the ring canal and extends to the end of the arms
  10. stone canal
    • WVS
    • short canal that connects the madreporite to the ring canal around the mouth
  11. hemal (hyponeural) canal
    water nutrients sent around gonads and ring canals
  12. ampulla
    bulbous area that connects to tube foot
  13. papula
    • specialized gills
    • in perivisceral coelom
  14. buccal tube feet
    • Suction-cuplike structure attached to radial canals of echinoderms
    • used in locomotion, respiration, attachment
    • pries clams open (suction)
  15. Echinoidea
    • "hedgehog like"
    • closed ambulcral system
    • fused exoskeleton
    • spines
    • pedecelaria
    • teeth
    • aristotles
  16. interambulacral region
    • have gonadal pores
    • madreporite ossicle
    • areas between ambulacral region
  17. respiratory tree
    • Holothuroids
    • system of hollow, blind-ended tubes in perivisceral coelom
  18. cuverian tubules
    • Holothurians
    • sticy tubules that are ejected from the anus to potential threats
    • After discharge, tubules are regenerated
    • not as common as evisceration
  19. genital plate
    • Echinoidea
    • ossicle that contains genital pore
  20. Eleutherozoa
    • "free animals"
    • groups
    • sea stars, brittle stars, urchins, sea cucumbers
    • motile
  21. endoskeleton
    skeletal structure under ectoderm
  22. calcerous ossicles
    • Used as shields of the oral cavity and WVS canals
    • spicules
  23. Asteroidea
    • "star like"
    • open ambulacral
    • CaCO3 ossicles
    • pedecellaria
    • mutagenic tissue
    • central disk with 5 arms
    • regenerating limbs
  24. ambulacral ossicles
    • occular plates
    • have pores through which tube feet extend
  25. ring canal
    • WVS
    • circular canal that is near the mouth and carries water from the stone canal to the radial canal
  26. hemal system
    • 3 radial vessle: hyponeural radial hv, genital radial hv, axial hv
    • 3 hemal rings (hyponeural, gastric, genital) that unite in the disc by an axial hv that joins the heart
  27. terminal canal
    • part of the radial canal that goes out of the ectoderm
    • has sensory function
  28. radial nerve
    • Eleutherozoa
    • nerve that extends down the arm from the nerve ring (5x)
  29. bursa
    • ophiuroidea
    • sac like cavities within the disc
    • waste sacs for water and gonadal and excratory matter
  30. test
    skeleton that forms most/almost complete body covering
  31. apical plate
    ring of genital and ocular plates in Echinoidea
  32. Holothuroidea
    • "poly like"
    • sea cucumbers
    • flabby urchin
    • tertiary bilaterally assymetric
    • creeping movement with 3 rows of dorsal tube feet
    • respiratory tree
    • evisceration
    • calcerous ring
  33. rete mirable
    • on left respiratory tree
    • unknown function
  34. evisceration
    • Holothurians
    • common stress responce
    • anterior/posterior end ruptures and parts of the gut and nearby organs are ejected
    • regeneration of lost parts after
  35. occular plate
    • Echinoderms
    • plates located in ambulacral region
  36. Crinoidea
    • "lily like"
    • feather stars and sea lilies
    • mouth faces upward to filter feed
    • many arms
    • most primitive of echinoderms
    • bendable stalk attached to the substrate
  37. Cryptosyringida
    • "hidden tube"
    • brittle sea star, sea urchins, sea cucumbers
    • closed ambulacral
    • solid fused exoskeleton
  38. pentaradial symmetry
    body parts always arranged radially in five or multiples of five
  39. madreporite
    • disk-shaped opening which water flows in and out of the WVS
    • helps filter out large particles from entering the body
    • dark colored
    • Also serves as gonadal pore
  40. nerve ring
    The center of the starfish nervous system that encircles the mouth
  41. tube foot
    Suction-cuplike structure attached to radial canals of echinodermsused in locomotion, respiration, attachmentpries clams open (suction)
  42. ambulacral groove
    • a groove that contains rows of tube feet
    • bordered by spines
  43. Ophiuroidea
    • "snail tail like"
    • brittle stars
    • fast moving
    • long detachable arms
    • vertebral column
    • bursa
    • cryptosyringidia
  44. ambulacaral region
    ambulacrum = "hidden path"
  45. aristotles lantern
    • Echinoidea
    • chewing apparatus
    • circular ring containing "purse string" muscles and teeth
  46. calcerous ring
    • Holothurians
    • fused ossicles that surround pharynx
    • acts as an anchor to tentacles
  47. Closed vs Open ambulacral region
    • Closed when ossicles block various canals and other interior structures
    • Open if ossicles do no completely cover internal structure
  48. Asteroidea larva
    • vittelaria
    • dipleurula
    • bipinnaria
    • branchiolaria
  49. Ophiuroidea larva
    • pluteus
    • ophinopluteus
  50. Echinoidea larva
    • plutues
    • echinopluteus
  51. Holothoroidea larva
    • auricularia
    • doliolaria
    • pentactula

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