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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 ...
Males range from 20 to 25.9 mm in length, and females measure around 28.7 mm, approximately the diameter of a U.S. quarter. [5] [6] With its highly truncated snout it is well adapted to its burrowing lifestyle. They have a characteristic tympanic membrane and their pupil is horizontally ecliptic.
Its tympanic membrane is distinguishable from the adjacent tissues, being surrounded by about one third of the tympanic ring and corresponding to 52% of the eye diameter. Its choana is broad and rounded, with the tongue being wide and long, 25% of which is attached to the mouth.
Odorrana graminea males have a non-recessed tympanic membrane. [13] This is contrary to previous theories that recessed tympana specifically enable perception of high-frequency sounds (recessed tympanic membranes are exhibited in both other species of ultrasonic-communicating frogs: Odorrana tormota , Huia cavitympanum ). [ 23 ]
In the anatomy of humans and various other tetrapods, the eardrum, also called the tympanic membrane or myringa, is a thin, cone-shaped membrane that separates the external ear from the middle ear. Its function is to transmit changes in pressure of sound from the air to the ossicles inside the middle ear, and thence to the oval window in the ...
Frogs range in size from Paedophryne amauensis of Papua New Guinea that is 7.7 mm (0.30 in) in snout–vent length [48] to the up to about 35 cm (14 in) and 3.3 kg (7.3 lb) goliath frog (Conraua goliath) of central Africa. [49]
A Cuban tree frog explored in Lake Worth, Florida in 2010. According to the University of Florida, the frogs are an invasive species.
Males measure about 27 mm (1.1 in) in snout–vent length; female size is unknown. The snout is round in dorsal view and gradually inclined in lateral profile. The tympanum is visible but the tympanic membrane is pigmented as the surrounding skin and the tympanic annulus is only partially visible. A low low supratympanic fold is evident.