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Frog tympanum surface

Image Number: 25172B

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Caption:

Frog tympanum / tympanic membrane surface (Eleutherodactylus coqui). Shown here is the surface of the frog tympanic membrane (ear membrane). Individual epithelial cells (skin cells) with highly convoluted surface ridges make up the tympanic membrane surface. In frogs a distinct tympanic fold wraps around the tympanum. The tympanum is composed of nonglandular skin cells (epithelial cells) and unlike the human eardrum it is situated externally on the frog (in most species behind the eye). It functions in a similar fashion to the human eardrum. There is a bone attached to the tympanic membrane that also attaches to the oval window of the inner ear. When sound waves strike the membrane vibrations are transferred via this bone to the fluid of the inner ear. This in turn causes receptors within the inner ear to be stimulated, sending a transmission to the brain for processing.

Keywords:

| 25172B miscellaneous vertebrates frog coqui coqui frog pest Eleutherodactylus Hawaii misc. vertebrates tympanic membrane misc. vertebrate tympanum frog auditory organ frog hearing organ frog sense organ frog ear frog hearing amphibian ear amphibian hearing amphibian hearing organ amphibian tympanum ear membrane epithelia epithelial cell epithelial cells epithelium frog skin cell frog skin cells ear epithelia ear epithelium SEM tympanic fold tympanic folds nonglandular skin cell nonglandular skin cells skin cell skin cells ear agricultural pest agriculture pest cell surface frog pest invasive pest invasive species non-glandular skin cells tympanum cell surface ear membrane vibration ear membrane vibrations membrane vibration membrane vibrations eardrum 03.01.09 Eleutherodactylus coqui Hawaii coqui frog Hawaii frog Hawaiian frog Hawaii tree frog Hawaiian tree frog |

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