They are continuous with the oval and round windows of the cochlea, so sound entering the cochlea can be transmitted through the perilymph to the basilar membrane. Both are filled with perilymph and surround the hearing apparatus. What is the relationship between the oval and round windows of the cochlea and the basilar membrane?
1) They are not related
2) They are connected by the perilymph
3) They are part of the same structure
4) They are located in different parts of the ear