Arrange the following structures in the order in which they vibrate when a sound wave enters the ear. eardrum (1) endolymph (2) ossicles (3) oval window (4) perilymph (5)

Eardrum→Ossicles→Oval window→Endolymph→Perilymph

Explanation:

The Ear is the organ of hearing and in mammals balance. In mammals the ear is often described as having three parts- The outer ear, the middle ear and the inner ear. the outer ear consist of the pinna and ear canal. The middle ear include the lymphatic cavity and the three ossicles. The inner ear sits in the bony labyrinth, and contain structures which are key to several senses: The semi circular canal which enable balance and eye tracking when moving. The Utricle and saccule which enable balance when stationary and the cochlea which enable hearing.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.