Term
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Definition
| upper portion of membranous labyrinth of inner ear |
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Term
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Definition
| sensitive to angular accelerations(rotations): maintains equilibrium and orientation |
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Term
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Definition
| semicircular canals filled w/ endolymph |
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Term
| semicircular canals w/ ampulla |
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Definition
| inside is organ made of cupula and hair cells; cupula occludes ampulla; endolymph movement deforms cupula -> stimulates hair cells |
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Term
| jawed fishes: 3 semicircular canals |
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Definition
| oriented in perpendicular planes; sensitive to pitch, roll, yaw; each angular movement cases flow of endolymph relative to one canal |
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Term
| semicircular canals in jawless fishes |
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Definition
| fewer; 2 in lamprey, 1 in hagfish; these fish must be less discriminating of diff angular accelerations |
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