Ed Tech Lesson Plan

The structure of ear comprises three main sections: the outer ear, middle ear and inner ear.
The outer or external earis made up of the pinna, the auditory canal and the ear drum.
The outer ear includes:auricle /pinna (cartilage covered by skin placed on opposite sides of the head) the auditory canal (also called the ear canal) and the eardrum outer layer (also called the tympanic membrane).
The middle earcontains a chain of three tiny bones the malleus, incus and stapes which is present in the same order.
The middle ear includes theeardrum,cavity (also called the tympanic cavity), and theossicles (3 tiny bones that are attached)malleus (or hammer) - long handle attached to the eardrumincus (or anvil) - the bridge bone between the malleus and the stapes(or stirrup) - the footplate; the smallest bone in the body.
The inner includesoval window - connects the middle ear with the inner earsemicircular ducts - filled with fluid; attached to cochlea and nerves; send information on balance and head position to the brain.
The inner ear also includes cochlea - spiral-shaped organ of hearing; transforms sound into signals that get sent to the brainauditory tube - drains fluid from the middle ear into the throat behind the nose.
So today we highlighted, the three main structures of the ear. I hope you learned something from it.

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