Skeletal System of the Cat Flashcards
The Axial skeleton is consists of
Skull, Mandible, Hyoid, Apparatus, Vertebral column, ribs and sternum
On the dorsal surface, the following bones and structure should be identified
Skull
A pair of bones forming the lower boundary of the external nares, each bone bears three small incisor teeth
Premaxillary bones
A long pointed bone located posterior to each external nares
Nasal bones
Each of there two bones lies lateral to a nasal bone and bears five teeth, makeup the greater part of the upper jaw and palate
Maxillary bones
A pair of large bones forming the anterior part of the skull and a large portion of the medial wall of each orbit
Frontal bones
Each bone (of the frontal bone) has a laterally projecting
Postorbital process
Each of these two bones bounds the orbit laterally and forms a part of the zygomatic arch
Malar (jugal) bone
Each molar bone has a postorbital process that extends upward of the frontal bones on the side and a ventrocaudally directed
Zygomatic process
The pair of bones is located at a posterolateral region of the skill, each articulates anteriorly with a frontal bone and meets its mate in the mid-dorsal line
Parietal bone
A single median triangular bone located between the posterior part of the two parietal bones
Interparietal bone
These large flat bones are located on each side of the skull
Squamosal bones
The squamosal bone gives rise to a zygomatic process which is directed toward the molar one to complete the ___
Zygomatic arch
The part of the occipital bones located posterior to the parietals
Supraoccipital bone
This is the anterior of the two large cavities formed between the frontal bone and zygomatic arch
Orbit
The posterior of the two cavities, it is partially separated from the orbit by the post orbital processes of the malar and frontal bones
Planum bones
A transverse crest extending across the upper part of the occipital bone
Lambdoidal ridge
A midline ridge that extends vertically along the intraparietal and supraoccipital bone
Sagittal crest
Thin wallled rounded bony eminence located ventral too the squamosal
Tympanic bulla
Outer region of the petrous portion of the temporal bone, somewhat triangular and projects anteroventrally adjacent to the tympanic bulla
Mastoid bone
The ventral tip of the mastoid bone forms the
Mastoid process
The dental formula for each half upper jaw is 3 incisors, 1 canine, 3 premolars and 1 molar
Teeth
Each bone of this pair lies behind the maxillary and along with part of the maxillary
Palatine bone
Unpaired bone that forms the posterior part of the nasal septum and the roof of the posterior part
Vomer
A small elongated bone that lies on the midline behind the vomer
presphenoid bone
Each of these is a process of the presphenoid bone which can be seen in the posteromedial wall of the orbit
Orbitosphenoid bone
An unpaired midline bone lying behind the presphenoid
Basisphenoid bone
Wing like part of the sphenoid bone located on the medial wall of the temporal fossa
Alisphenoid bone
Transverse DEPRESSION (me) lateral to the alisphenoid, the concavity on the medial surface of the zygomatic process of the temporal bone
Mandibular fossa
A broad unpaired bone that is present along the midline and extends from the basisphenoid to the foramen magnum
Basioccipital bone
A part of the occipital bone, it extends medially to form the anterolateral boundary of the foramen magnum
Exoccipital bone
Each bears on ovoid prominence that articulates with the atlas or first cervical vertebra
Occipital condye
The relatively large bone occupying the nasal cavity
Ethmoid bbones
Scroll shaped bone
ethmoturbinals
Medial unpaired vertical plate
Mesethmoif
A shelf bone projecting into the cranial cavity from the parietal bone it partially separates the cerebral and cerebellar fossae
Tentorium
A depression in the basisphenoid bone that houses the pituitary gland
Hypopyseal fossa
Endocrine gland surrounded in the back by bony plates together with the bony floor of the fossa
Sella turica
The cavity with the basisphenoid located anterior to the hypophyseal fossa
Sphenoid sinus
The cavity within each frontal bonne
Frontal sinus
Anterior horizontal part of the mandible in which the teeth are embedded
Body
Posterior and somewhat vertical part of the mandible
Ramus
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