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A frog's ear drum works in very much the same way as does a human eardrum. It is a membrane that is stretched across a ring of cartilage like a snare drum that vibrates. Crossing the middle ear chamber there is an ossicle called the columella that is connected to the tympanum, and another ossicle, the operculum, that connects this to the oval ...
Phrynopus are small to medium-sized frogs, from 14.5 mm (0.57 in) snout–vent length in Phrynopus auriculatus to 54 mm (2.1 in) in Phrynopus kauneorum. Head is narrower than the body. Differentiated tympanic membrane and tympanic annulus are usually absent, except in Phrynopus auriculatus and Phrynopus peruanus, two basal species.
Tympanal organ on the tibia of the katydid Zabalius aridus Tympanal organ of two species of moths, ventral view of abdomen (Tineidae and Pyralidae). A tympanal organ (or tympanic organ) is a hearing organ in insects, consisting of a tympanal membrane stretched across a frame backed by an air sac and associated sensory neurons. [1]
Species of the genus Bryophryne are smallish frogs, reaching maximum snout–vent length of 29.3 mm (1.15 in) in Bryophryne cophites. [3] Head is narrower than the body. Differentiated tympanic membrane, tympanic annulus, columella, and cavum tympanicum are absent. Dorsum is finely areolate whereas venter is coarsely areolate. [1]
Tympanum (anatomy), a hearing organ/gland in frogs and toads, a flat red oval on both sides of a frog's head; Tympanum, in biology, the eardrum; Tympanum, or tympanal organ, a hearing organ in insects; Tympanum (hand drum), a percussion instrument in ancient Greece and Rome; Timpano, in music, singular of timpani, a kettledrum
The vocal sac is the flexible membrane of skin possessed by most male frogs and toads. The purpose of the vocal sac is usually as an amplification of their mating or advertisement call. The presence or development of the vocal sac is one way of externally determining the sex of a frog or toad in many species; taking frogs as an example;
In the cochlea, a shearing movement between the tectorial membrane and the basilar membrane deflects the stereocilia, affecting the tension on the tip-link filaments, which then open and close the non-specific ion channels. [2] When tension increases, the flow of ions across the membrane into the hair cell rises as well.
The visible part is called the auricle, also known as the pinna, especially in other animals.It is composed of a thin plate of yellow elastic cartilage, covered with integument, and connected to the surrounding parts by ligaments and muscles; and to the commencement of the ear canal by fibrous tissue.