Thyroid cartilage in cat
The stylohyal bone is located medial of the Mm. Accepted Jul 9. Author information Article notes Copyright and License information Disclaimer. Categories : Human head and neck. Table 1 Examined specimens. Abstract Structures of the hyoid apparatus, the pharynx and their topographical positions in the lion, tiger, jaguar, cheetah and domestic cat were described in order to determine morphological differences between species or subfamilies of the Felidae. Anterolateral view of head and neck cricoid cartilage labeled at center left. The slender ventral half, and the most caudal of the palpable laryngeal landmarks, is also referred to as the anterior cricoid arch. Materials and methods The heads and necks of one lion, three tigers, four jaguars, one cheetah and five domestic cats were examined within a few hours after death or after formalin fixation, using radiography, computed tomography CTmagnetic resonance imaging MRI and gross anatomical as well as histological methods see Table 1.
thyroid cartilage median cricothyroid ligament conus elasticus cricoid cartilage trachea cricothyroid muscle inferior cornu of thyroid cartilage cricothyroid joint.
Surgical conditions of the feline larynx are relatively uncommon. The five laryngeal cartilages are the epiglottis, thyroid cartilage, cricoid. Figure Illustration of the intrinsic musculature of the feline larynx, lateral view with window in thyroid cartilage.
ATM, arytenoideus transversus muscle; ADM.
In the last-mentioned two species the Cornu rostrale of the thyroid cartilage is located dorsomedial of the Thyrohyoideum and connected via short, taut ligaments Figs 6 — 8. In the tiger the Articulatio thyrohyoidea is a synovial joint with a taut capsule Fig. London ; — The male tiger and the domestic cats were kept by private owners either in Austria domestic cats or USA tiger. We suggest that roaring the low pitch vocalization seen in prototypical form in lions and red deer has two distinct physiological and acoustic components: a low fundamental frequency, made possible by long or heavy vocal folds, which lead to the low pitch of the roar; lowered formant frequencies, made possible by an elongated vocal tract, which provide the impressive baritone timbre of roars.
As compared with the cheetah and the domestic cat the enormous pharyngeal elongation is caused by the expansion of the Pars nasalis and Pars oralis pharyngiswhich in the Panthera species are separated by an elongated Velum palatinum.
Video: Thyroid cartilage in cat Thyroid Cartilage - Definition & Function - Human Anatomy - Kenhub
It is made of hyaline cartilageand so can become calcified or even ossifiedparticularly in old age.
Hyoid apparatus, larynx and cranial part of the trachea in the domestic cat. In most species of the cat family the hyoid hone is suspended from the skull by a series of small structures: E, epiglottis; C, cricoid cartilage; T, thyroid cartilage.
The thyroid cartilage, which forms the Adam's apple, is the largest and uppermost of nine cartilages within the larynx, or voice box.
The Ceratohyoideum of all examined species is a rod-shaped bone and situated in a sagittal plane, but in the Panthera species its caudal end lies more lateral than the rostral. Stuttgart: Enke; However, the elastic epihyoid of the Pantherinae has an independent function: allowing the lowering of the larynx, with concomitant lowering of formant frequencies. The present study additionally documents the far caudal position of the Basihyoideum and the larynx in the tiger and the jaguar.
The male tiger was examined by CT only. In the Panthera species almost all origins of the mentioned muscles are located dorsal of the rotated, ventral part of the Tympanohyoideum.
The cricoid cartilage /ˌkraɪkɔɪd ˈkɑːrtɪlɪdʒ/, or simply cricoid or cricoid ringis the only The cricoid cartilage sits just inferior to the thyroid cartilage in the neck, at the level of the C6 vertebra, and is joined to it medially by the median.
In cats, the incidence of laryngeal disease is based on limited reports in the your doctor will be looking for is thyroid disease, particularly if your cat is older.
Berlin: Paul Parey; A venous Rete mirabilewhich in the present study was observed within the wall of the Vestibulum oesophagiis also found in humans, horses, cattle, domestic pigs and dogs Elze, ; Baier, London ; — On the anatomy of the cheetah, Felis jubataSchreb. The larynx of roaring and non-roaring cats.
Thyroid Cartilage Anatomy, Function & Diagram Body Maps
Hyoid structure, laryngeal anatomy, and vocalization in felids Mammalia: Carnivora: Felidae Z. Arrow indicates the rotation within the Tympanohyoideum T.
Thyroid cartilage in cat
|Based on the morphological findings presented here we bring forward two hypotheses: Because of the relatively more caudal position of the larynx in the five felid species with an incompletely ossified hyoid subfamily Pantherinae their vocalizations are predicted to have formant frequencies that lie significantly below the allometric curve of this parameter for the other species of the Felidae.
Rodents, Primates or family e. It forms the back part of the voice box and functions as an attachment site for muscles, cartilages, and ligaments involved in opening and closing the airway and in producing speech. In the cheetah and the domestic cat the stylohyal bone runs rostroventrally and the bony Epihyoideum is connected via a synchondrosis Figs 6 — 8. Sh, M. All examined specimens of hyoid bones in the lion, tiger and adult jaguar display a relatively uniform position relative to the cervical vertebrae.
Cartilaginous Tympanohyoideum on top and bony Stylohyoideum of lion, tiger and jaguar.