Anatomia topograficzna ucha srodkowego i wewnetrznego kota

• Autorzy: Wysocki J

Warianty tytułu

EN

Topographical anatomy of the cat's temporal bone

• Języki publikacji: PL

Abstrakty

EN

The topographical anatomy of domestic animals, including cats, has hitherto not been thoroughly described. In the present study a systematic anatomical description and measurements of selected size parameters of temporal bones as well as skulls was performed on the basis of the dissection of twelve specimens (24 temporal bones). Air spaces of the middle ear in the cat are well developed, creating a pneumatic system where the Eustachian tube delivers fresh air. The greatest element of this system is the tympanic bulla. It is situated superficially and is an important landmark and an easy surgical path to the middle ear. After opening the tympanic bulla a bony septum is visible dividing the bulla into two parts: the ventro-medial and the dorso-lateral. Two openings communicate these almost fully separate spaces. One opening lies frontally to the promontory, another one is situated caudally to the round window niche. The tympanic cavity has several recesses, penetrating into its walls, and creating separate compartments to a certain degree. One of these compartments is epitympanic recess, embracing the head of the malleus and trunk of the incus, as well as an air cell beneath the facial canal, situated posteriorly to the promontory. The stapedius muscle is of considerable size, and is situated in the inferior part of the facial canal, superiorly to the oval window and partly rounded by the lateral semicircular canal. The semicircular canals are of considerable size also, although the superior one is the greatest and posterior one is the smallest. It was stated that in the cats vestibule there are only 4 not 5 openings for the semicircular canals, because of presence of two common crura. From among the measured size parameters the most stable were diameters of semicircular canals (about 3-4 mm), while the most variable - the size parameters of the tympanic cavity. The maximal height of the tympanic cavity, measured between two extreme points (tympanic bulla - epitympanic recess) was 13.2-16 mm, and the maximal length, measured from the posterior wall of the tympanic cavity to the internal opening of the Eustachian tube, was 14.8-18.6 mm. There was no parameter significantly correlated with the total length of the skull.

Słowa kluczowe

PL

anatomia topograficzna; koty; ucho wewnetrzne; genetyka zwierzat; kosc skroniowa; ucho srodkowe

• Wydawca: -
• Czasopismo: Medycyna Weterynaryjna
• Rocznik: 2006
• Tom: 62
• Numer: 04
• Opis fizyczny: s.432-436,fot.,bibliogr.

Twórcy

autor

Wysocki J

• Instytut Fizjologii i Patologii Sluchu, ul.Pstrowskiego 1, 01-943 Warszawa

Bibliografia

• 1.Cass S. P., Davidson P., Goshgarian H.: Survival of the vestibular nerve after labyrinthectomy in the cat. Otolaryngol. Head. Neck. Surg. 1989, 101, 459-465.
• 2.Constantinescu G. M.: Clinical Anatomy for Small Animal Practitioners. Iowa State Press, Ames, Iowa 2002.
• 3.Davison A.: Mammalian anatomy with special reference to the cat. Rebman Ltd., London 1903, 40-51, 156-158.
• 4.Dickie A. M., Doust R., Cromarty L., Johnson V. S., Sullivan M., Boyd J. S.: Comparison of ultrasonography, radiography and a single computed tomography slice for the identification of fluid within the canine tympanic bulla. Res. Vet. Sci. 2003, 75, 209-216.
• 5.Dyce K. M., Sack W. O., Wensing C. J. G.: Veterinary Anatomy. Saunders W. B. Co., Philadelphia 1996.
• 6.Farrow C. S.: Veterinary Diagnostic Imaging the Dog and Cat. Mosby, St. Louis 2003, 321-235.
• 7.Garosi L. S., Dennis R., Schwarz T.: Review of diagnostic imaging of ear diseases in the dog and cat. Vet. Radiol. Ultrasound 2003, 44, 137-146.
• 8.Gotthelf L. N.: Diagnosis and treatment of otitis media in dogs and cats. Vet. Clin. North Am. Small Anim. Pract. 2004, 34, 469-487.
• 9.Krysiak K., Kobryñ H., Kobryñczuk F.: Anatomia zwierząt. T. I-III, PWN, Warszawa 2001.
• 10.Ruberte J., Sautet J.: Atlas d’anatomie du chien et du chat. Multimedica, Barcelona 1995.
• 11.Trevor P. B., Martin R. A.: Tympanic bulla osteotomy for treatment of middle-ear disease in cats: 19 cases (1984-1991). J. Am. Vet. Med. Assoc. 1993, 202, 123-128.