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Canine Skull
Basic parts, location and function of bones within Canine Skull
Term | Definition |
---|---|
Skull | framework of bone/cartilage enclosing brain of vertebrate - Function: Protect brain, eyes, nerve, vessels - Parts: Cranium, Maxilla, Mandible - Bone groups: Cranial & Facial Axial Skeleton |
Craninal Cavity | protects brain w/o mandible = Cranium |
Temporal Bone | ouses hearing & balancing organs, nerves, vessels form TMJ surface joins with zygomatic bone to form zygomatic arch (cheek bone) |
Frontal Bone | joinging with suture b/w cranium & face to enclose facial cavity forms face & roof of skull |
Parietal Bone | shapes & protects brain |
Occipital Bone | symetrical & unpaired @ caudal makes up nuchal wall attaches to mucle that connects head -- neck -- spine |
Lacrimal Bone | flat & angular bone providing structure & support to Lacrimal apparatus (tear/crying system) |
Nasal Bone | makes up 3 nasal vaults support nasal spectum |
Mandible | Lower jaw with lower teeth for chewing |
Maxilla | upper jaw holding upper teeth, forming the nasal frame - stabilizes with small wires (roots) in teeth |
Incisive Bone | part of maxilla bearing the upper incisive teeth |
Zygomatic Bone | AKA: Malar bone, helps chewing and for pill giving |
Magnum Foramen | largest in sull passage of nerve system connecting brain to spinal cord |
Sagittal Crest | fin structure @ top, seen in dogs with longer noses indication of strong jaw for eating & chewing |
Atlantoaxial Joint | Synovial Joint allows head to mve side to side |
Atlantooccipital Joint | Synovial Ellisoid joint: connects occipital bone of skull to spine flexion & extension for cranium motion |
Temporomandibular Joint | Synovial Joint: found in bones moving agest each other connects madible to skull allowing mouth to open & close |
Temporohyoid Joint | Sychodrosis Joint: holds bony elements together ensures attachment of hyoid & temporal bone of each side |
Suture Joint | Fibrous |