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The middle ear includes the eardrum and a small, air-filled chamber that contains 3 tiny bones: the hammer, anvil, and stirrup. It also includes 2 muscles, the oval window, and the eustachian tube (a small tube that connects the middle ear with the back of the nose, allowing air to enter the middle ear).
- Disorders of The Outer Ear in Dogs
A variety of skin conditions affect the outside part of the...
- Disorders of The Outer Ear in Dogs
The dorsorostral margin of the external acoustic meatus is in close apposition to a plateau of bone formed by the zygomatic process of the temporal bone ( Fig. 4 ). In most dog breeds,...
10 Σεπ 2016 · The basic anatomical components of the dog and cat ear are as follows: • Auricle, or pinna. • Auditory canal, or external auditory meatus. • Middle ear. • Internal ear. Structure of the External Ear. The external ear is composed of three elastic cartilages: annular, scutiform, and auricular (Figure 1-1).
23 Ιουν 2017 · The ossicles of the ear – the stapes, incus, and portions of the malleus – reside within the epitympanic recess and span the distance from the inner ear to the tympanic membrane . The tympanic cavity is lined by simple squamous or cuboidal epithelium, except at the orifice of the auditory tube.
The canine ear consists of the pinna, external ear canal, middle ear and inner ear. The external ear is composed of auricular and annular cartilage. The auricular cartilage of the pinna becomes funnel shaped at the opening of the external ear canal.
The dog ear anatomy is a complex structure with three main parts, including the outer ear, middle ear, and inner ear. The outer ear or pinna is formed by the ear flap and ear canal. The middle ear comprises the eardrum, ossicles, and the Eustachian tube.
The middle ear also contains three bones (the hammer, anvil, and stirrup) which are involved in hearing. Inner Ear. Farther in from the middle ear is the inner ear. One responsibility of the inner ear is the maintenance of the dog's equilibrium or balance. This structure contains fluid-filled canals, called the semicircular canals.
