Skull Objectives Flashcards
Bones Included in the Skeleton of the head
Skull, Mandible, Hyoid Apparatus, Ossicles of the middle ear, Cartilages of the external ear, nose, and larynx
a build up of fluid deep within the brain
hydrocephalus
Structure that houses or encases the Brain
Cranium
Bones surrounding the respiratory and digestive systems
Facial
The cranial bones articulate with what bones?
Mandibles of the jaw, ear ossicles, and the hyoid app.
Typically these breeds have short skull shapes and very compressed nasal cavities
Brachycephalic
Breeds that are typically Brachycephalic
Boston Terriers, English Bulldogs, French bulldogs
Typically these breeds have medium length skulls
Meso/Mesaticephalic
Breeds that are Meso/Mesaticephalic?
Golden Ret., Labs
Typically these breeds have a long skull shape?
Dolichocephalic
Breeds that Dolichocephalic?
Greyhounds, Collies
What three structures make up the skull as a whole? (types of bones and one linear structure)
Flat bones and Irregular Bones, and Suture lines
What are suture lines?
Where the individual flat bones come together on the dorsal portion of the skull
What are the 5 skull openings?
Foramen, Fissure, Meatus, Canal, and Aperture
What are bumps and Ridges used for on the skull?
Muscle attachments + articulations
Three cavities of the skull
Brain, Sinuses, Nasal
Lower section of the jaw, composed of a horizontal and vertical portion as well as a left and right side
Mandible
What bones make up the Hyoid Apparatus? whats the acronym used to remember it ?
Stylohyoid, Epihyoid, Ceratohyoid, Basihyoid, Thyrohyoid
S.E.C. Baseball (Basketball) Tournament
Which bone in the Hyoid Apparatus is the only singular bone?
B- Basihyoid
Whats the function of the Hyoid Apparatus?
Stabilizes the tongue and the larynx by suspending them from the skull
Three major parts of the tooth?
Crown, Neck, & Root in the alveolus (socket)
Each tooth is composed of a _______ and a ______ (s) which is embedded in the alveolus of the Jaw.
Crown and Root (s)
The junction of the root and the crown is the ______ of the tooth.
Neck
Three internal components of a tooth, from outside to inside
Enamel, Dentine, Pulp
Canine Dental Formula
[ I 3/3, C 1/1, P 4/4, M 2/3] x2 = 42 or
[3-1-4-2/3-1-4-3] x2 = 42
Feline Dental Formula
[ I 3/3, C 1/1, P 3/2, M 1/1] x 2= 30 or
[3-1-3-1/3-1-2-1] x 2 = 30
Four Types of teeth
I= Incisors C= Canines P= Premolars M= Molars
The teeth embedded in the incisive bone?
Incisors
Caudal to the incisors and separated by a space are which teeth?
Canines
Following the Canines, are the cheek teeth divided into which two sections?
Pre-Molars and Molars
The fourth Pre-molar is also known as what?
Upper Shearing tooth or carnassial or sectorial (common tooth for tooth root abscesses- can cause nasal discharge as well)
Baby Teeth AKA?
Deciduous teeth
The outer surface of the tooth?
Vestibular surface
Inner surface of the mandibular teeth?
Lingual surface (towards the tongue)
Inner surface of the maxillary teeth?
Palatine Surface (towards the soft palate)
Sides of the teeth that lie in contact with or face the adjacent tooth?
Contact Surfaces
On the first incisor the contact surface that next to the medial plane?
Mesial contact surface
The contact surface for all other that is directed towards the first incisor?
Mesial Contact surface
The surface opposite the mesial contact surface?
Distal contact surface
the surface of the tooth that faces opposite the dental arch?
Occlusal or masticating surface
Incisor Eruption dates
By 5 months
Canine and Premolar Eruption Dates
By 6 months
Molar Eruption Date
By 7 months
Three major joints in the skull
Temporomandibular, Mandibular Symphysis, and Atlanto Occipital
The two cranial articular foveae articulate with the occipital condyles of the skull to form this joint?
Atlanto-Occipital Joint
The joint between the the condylar process of the mandible and the mandibular fossa of the zygomatic process of the squamous part of the temporal bone?
Temporomandibular joint
The fibrocartilaginous joint where the left and right portions of the mandible come together at the front of the mandible?
Mandibular Symphysis
Vertebral Formula for a Dog and Cat
C7-T13-L7-S3-Cd (variable)
Maxillary Incisors, canines and first premolar have how many tooth roots?
1 per tooth
2nd and 3rd Maxillary premolars have how many tooth roots?
2
4th maxillary premolar and 2 maxillary molars have how many tooth roots?
3
Mandibular incisors, canines, and first premolar have how many roots?
1
on dogs the 2nd,3rd, and 4th mandibular premolars, and 1st molar have how many tooth roots?
2
The last mandibular molar on a dog has how many roots?
1
