Question

draw and explain the structure of human ear​

Answer 1

Answer:

Here the answer

Explanation:

1. The external ear: formed by the pinna and the external auditory canal, which receives sounds and transmits them to the middle ear via the eardrum. The eardrum is circular and flexible, and begins to vibrate as the incoming sound waves strike it.
2. The middle ear: includes the ossicles, three minuscule bones called the malleus, incus and stapes (the latter being the smallest bone in the human body). These bones form a bridge between the eardrum and the inner ear through the oval window that covers the cochlea. A narrow tube of approximately 3.5 cm in length, called the Eustachian tube, connects the ear to the outer part of the nose and acts as an equalizing valve. This ensures that the pressure on either side of the eardrum is balanced and that sound can be heard correctly.
3. The inner ear: includes the cochlea, a structure that has a spiral shape similar to a snail shell, and is located in the bony labyrinth, which has several membranous sections filled with fluids called endolymph and When these liquids move, they create fluctuations in the cochlea’s hair-like structures called stereocilia. Finally, the Organ of Corti transforms the mechanical energy of the sound waves into nerve energy by creating electric impulses that are sent to the brain through the auditory or vestibulocochlear nerve.