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lateral line system
shark sense; lateral line system
5
Biology
Undergraduate 4
07/19/2012

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Term
what does the lateral line detect?
Definition
moving, turning, or struggling an animal generates causing pressure waves and water displacements
Term
parker, 1904
Definition

classic work with lateral line

  • dogfish would respond to stimulus- no vision or hearing
  • sever lateral lines; no repsonse
Term
anatomy
Definition
  • network of fluid filled canals running the length of body and head
  • free standing neuromasts and pit organ
  • each canal- tiny sensory cells called neuromasts
Term
neuromasts
Definition
  • bunches of mechanoreceptors- sensory hairs
  • cupula on each bundle
  • pressure waves enter and move hairs, sends impulse to brain
  • detects water movements by predators, conspecifics, and currents
Term
pit organs
Definition
  • pored and non pored neuromasts occuring in different parts of body
  • play a role in schooling, detecting prey, guiding the mouth to food, and possibly temperature
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