Question

What is tympanum in insects?

Answer 1

Tympanum:

1. The tympanal organ of insects is made up of two scolophores on either side of a thin, chitinous membrane that is attached to the surface of the body.
2. The tympanic membrane, or eardrum, is often attached at one end of the scolophores by a spinous process, and the other ends rest on an immovable portion of the body structure.
3. The nerve fibre from the ganglion cell of the scolophore transmits impulses to the central nervous system when the membrane oscillates in response to the alternating pressures of sound waves.
4. This sort of ear is a pressure ear because sound waves' pressure activates the tympanic membrane.