A male working as a blacksmith has been tested for auditory acuity. The tests revealed 50% hearing loss in the low-frequency range and a near-normal auditory acuity in the high-frequency range. This condition has been caused by the damage to the following structures of the auditory system:

Answer options

1. Eardrum
2. Median part of the Corti’s organ
3. Corti’s organ - closer to helicotrema
4. Muscles of the middle ear
5. Corti’s organ - closer to the oval foramen

Explanation

A male working as a blacksmith has been tested for auditory acuity. The tests revealed 50% hearing loss in the low-frequency range and a near-normal auditory acuity in the high-frequency range. This condition has been caused by the damage to the following structures of the auditory system: Corti’s organ – closer to helicotrema Corti’s organ – closer to the oval foramenThe helicotrema is the part of the cochlear labyrinth where the scala vestibule and tympani meet. The hair cells near this area best detect low-frequency sounds.