Details

Title: !Fishes 2

Description: Sensory Perception: Structure and function of mechanoreception system: Octavolateralis System

Total Flash Cards: 5

Created: 11/10/2009 21:12:04

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Additional Biology Flashcards

Cards in this set:

Term
Octavolateralis system
 Definition
sense of touch and hearing; inner ear and lateral line system
Term
octavolateralis system used to be called
 Definition
acousticolateralis; believed functioned primarily in hearing and developmentally linked and homologous; beliefs in doubt, new name reflects innervation by 8th cranial nerve
Term
neuromast organ
 Definition
basic sensory unit occurs throughout octavolateralis system
Term
neuromast organ composed of hair cells
 Definition
have synapses w/ nerve cells, each w/ ciliary bundle w/ kinocilium and multiple stereocilia; movement of kinocilium relative to stereocilia stimulates or inhibits nerve impulse
Term
neuromast organ hair cell sensitivity
 Definition
each directionally sensitive, neuromast organs w/ multiple hair cells which may be in diff orientations, so organ can be exquisitely sensitive to movement direction as well as intensity