How is the ear divided into three parts?

How is the ear divided into three parts?

The ear is divided into three parts: Outer ear: The outer ear includes an ear canal that is is lined with hairs and glands that secrete wax. Middle ear: Three tiny bones — the malleus, incus, and stapes — within the middle ear transfer sound vibrations from the eardrum to the inner ear.

What makes up the outer ear of the human body?

The outer ear is made up of cartilage and skin. There are three different parts to the outer ear; the tragus, helix and the lobule. The ear canal starts at the outer ear and ends at the ear drum.

Where does the ear canal start and end?

EAR CANAL. The ear canal starts at the outer ear and ends at the ear drum. The canal is approximately an inch in length. The skin of the ear canal is very sensitive to pain and pressure. Under the skin the outer one third of the canal is cartilage and inner two thirds is bone.

What is the function of the middle ear?

This part of the ear provides protection and channels sound. Middle ear: Three tiny bones — the malleus, incus, and stapes — within the middle ear transfer sound vibrations from the eardrum to the inner ear.

What are the three main parts of the ear?

There are three major parts of the ear, the outer, middle and inner ear. Each contains several parts that are essential to the overall function of the ear. The outer ear is the portion of the ear that sits atop the skull, which is made of flesh and cartilage.

How to describe the parts of the ear?

Anatomically, the ear has three distinguishable parts: the outer, middle, and inner ear . The outer ear consists of the visible portion called the auricle, or pinna, which projects from the side of the head, and the short external auditory canal, the inner end of which is closed by the tympanic membrane, commonly called the eardrum.

What are the major structures of the ear?

The outer ear is composed of three parts, the pinna (or auricle), the auditory canal, and the eardrum (tympanic membrane). What are commonly called ears—the two flaplike structures on either side of the head—are actually the pinnas of the outer ear.

What parts of the ear are in the inner ear?

Inner ear, also called labyrinth of the ear, part of the ear that contains organs of the senses of hearing and equilibrium. The bony labyrinth, a cavity in the temporal bone, is divided into three sections: the vestibule, the semicircular canals, and the cochlea.