The discrimination in the sound of varying intensities is done by which part of human ear
Answers
Human ear is a complex organ that is composed of three main parts:
- outer ear
- middle ear
- inner ear
The outer ear functions mainly to collect the sound and carry it to the middle ear, while middle ear takes the sound waves to the inner ear. The inner ear contains two basic structures; vestibule and cochlea. The vestibule helps in the maintenance of balance, while the cochlea (consist of three ducts) contains hair cells which are responsible to detect the sound. the hair cells are further attached with the basilar membrane, the vibration of this membrane helps in the discrimination of the sound with varying intensities. The brain receives signals from cochlea depending upon the type of vibration.
Answer:
The cochlea of the inner ear distinguishes sounds of different intensities.
Explanation:
It also differentiates between sounds of different pitch. The basilar membrane within the cochlea is equipped with differential vibrational properties to different intensities of sound. It is also known as a pseudo-resonant structure.
The basilar membrane is narrow and stiff at the base, and wide and less stiff at the apex. Sounds of high intensity causes the membrane to vibrate more vigorously (focussed at the base) than those of soft or low intensity (focussed at the apex). Through hair cells in the cochlea, this response it transmitted to the brain.