Write a note on the ear of frog.

EAR OF FROG:

The organ of hearing of frogs like the other vertebrates is the ear. Its outermost part is called the tympanic membrane. On the inner side of tympanic membrane is a cavity known as tympanic cavity. The tympanic cavity contains rod like bones called the ossicles. One end of the ossicle bone is attached to the tympanic membrane and the other end with the internal ear.
The internal ear is a very delicate organ. It consists of three semi-circular canals. These canals are filled with a fluid. Sensory cells are present at special places in the semi-circular canals.

When sound waves strike the tympanic membrane, it is set into motion. This in turn vibrates the internal ear and thus sound waves stimulate the hearing receptors in the inner ear.
The internal ear, in addition to hearing also keeps the balance of the body too.