Auditory meatus8/15/2023 ![]() So, in the cat external ear anatomy, you will find a sound collecting part (auricle or pinna) and a short sound conducting portion (ear canal). So, you might continue this article to know the details facts of a cat ear. You will also find the cochlea, scala vestibule, and scala tympani in the structure of a cat’s inner ear.Īll these features from a cat ear will be discussed in detail in the specific part of this article. You will find three bony semicircular canals in the inner ear embedded in the petrous part of the temporal bone. There is a very spacious cavity in the bony labyrinth of the cat’s inner ear. You will also find the ligaments, nerves, and auditory muscles in the middle ear. Three movable auditory ossicles (malleus, incus, and stapes) are present within the tympanic cavity of a cat’s ear. The tympanic cavity of a cat ear is an air-filled cavity that communicates with the nasopharynx through an auditory tube (present in the inner ear). You will find an oval to elliptical thin, slightly opaque membranous partition (tympanic membrane or eardrum) between a cat’s ear’s external acoustic meatus and tympanic cavity. The outer part of the ear is cupped shaped (known as auricle or pinna) and consists of scutiform cartilage and intrinsic and extrinsic muscles.Īn external auditory meatus (ear canal) extends more or less ventrally and turns essentially medially to the tympanic membrane. But, you will learn more about these features of cat’s ear with the labeled diagrams. Here, I will enlist some of the special features from the cat’s ear. Now, you may learn the details anatomy of these three regions of a cat’s ear. Crista ampullary, macula, vestibular nerve, and cochlear ducts.Vestibule, semicircular canals, and cochleaĪgain, the membranous labyrinth of the cat’s inner ear consists –.In the bony labyrinth of cat’s inner ear, you will find – The inner ear is complicated and consists of two labyrinths – bony labyrinth and membranous labyrinth. There are two small muscles present within the ossicles of the ear. You will also find the ligaments of these three ossicles in the cat’s ear. Three bones of the middle ear (ossicles).In the external part of the cat’s ear, you will find the below-mentioned structures –Īgain, the middle ear of a cat consists of the following structures – The ear structure of most mammals (including a cat) is very complicated and embedded within the petrous part of the temporal bone. That might help you understand the main difference between the dog and cat ears. For description, I will tell you the anatomical facts of a cat’s ear from three different regions (external, middle, and inner) separately.īut, if you want, you may learn the basic structure of a dog’s ear anatomy before going to the deep of this article. They have a keener sense of hearing than that of a dog.Įxcept for the outer part of the ear, you will find almost similar structures in the cat ear anatomy like a dog. Frequently asked questions on cat ear anatomy.ĭo you know cats are exceedingly sensitive to sound? Yes, their hearing range extends well above and below the human hearing.Semicircular ducts of the membranous labyrinth.Membranous labyrinth of cat’s inner ear.Bony labyrinth (osseous) of a cat’s inner ear.The tympanic cavity of a cat’s middle ear.The tympanic membrane of the middle ear.Nerve and blood supply to the external ear.Other prophylactic measures such as drying the ears with a hair dryer and avoiding manipulation of the external auditory canal may help prevent recurrence. Acidification with a topical solution of 2 percent acetic acid combined with hydrocortisone for inflammation is effective treatment in most cases and, when used after exposure to moisture, is an excellent prophylactic. Thorough cleansing of the canal is essential for diagnosis and treatment, but flushing should be avoided. Excessive moisture and trauma, both of which impair the canal's natural defenses, are the two most common precipitants of otitis externa, and avoidance of these precipitants is the cornerstone of prevention. The most characteristic symptom is discomfort that is limited to the external auditory canal, while the most characteristic signs are erythema and swelling of the canal with variable discharge. Otitis externa is most commonly caused by infection (usually bacterial, although occasionally fungal), but it may also be associated with a variety of noninfectious systemic or local dermatologic processes.
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