Rodent Dentition Flashcards
Define rodere
To gnaw
What muscles are enlarges to allow gnawing?
What part of the skull is strong to allow gnawing?
What movements does the loose jaw articulation allow for?
What anatomical features separate the oral cavity?
Masseter muscles enlarged.
Mandible strong.
Rotary movement and forward and backward movement.
Cheek folds separate oral cavity.
What 2 masseter muscles are there on each rodent cheek?
Medial and lateral.
Origin of the medial masseter muscle.
Insertion of the medial masseter muscle in myomorphs.
What bony hole does the medial masseter muscle pass through before insertion in myomorphs?
Origin = mandible
Insertion = rostral maxilla, close to nose.
Infraorbital foramen.
What is the difference with the medial masseter muscle of the hystricomorph?
Inserts onto the rostral muzzle but at a straighter angle.
Diffferenve between upper and lower incisors in myomorphs?
How is the chisel-like appearance of the incisors achieved?
Lower normally longer than upper
Self-sharpening as lingual surface softer
Teeth colour of hamsters
What is use by hamsters for food storage and transport?
Slightly yellow/orange teeth
Extensive food pouches used for food storage and transport.
Presenting signs of dental complaint in Guinea pigs?
Dribbling — wet/dirty under chin or on forelimbs.
Weight loss/anorexia
Define malocclusion
Compare upper and lower incisors of hystricomorphs
An issue where there is imperfect positioning of the teeth when the jaws are closed.
Lower longer than upper.
Name the fleshy part of the root of the tongue
Torus linguae
What is the palatal ostium?
What common practice is is made difficult by the palatal ostium?
What is done as an alternative?
A small hole in the soft palate that leads from the oral cavity to the trachea etc.
Intubation made difficult
Masking/injectable anaesthesia
