Mouth and Teeth Flashcards
what is an important site of muscle attachment for the mouth
basihyoid bone
what are the cheek pouches called
buccal vestibule
what is unique about dentition in ruminants
dental pad - acts like a cutting board
T/f incisive papillae are in all species
T
T/f buccal papillae are in all species
F (ruminants only)
What does heterodont mean
different teeth shapes
What does homodont mean
All teeth are the same shape
What does diphyodont mean
Two sets of teeth (baby/deciduous and adult/permanent)
What does polyphyodont mean
Continuous replacement of teeth
Are most mammals diphyodont or polyphyodont
diphyodont
What are brachyodont teeth
low crowned teeth (root > crown)
What are hypsodont teeth
high crowned (crown > root)
What are examples of brachyodont teeth
carnivore teeth, horse deciduous incisors, pig teeth besides the tusk, ruminant incisors
What are examples of hypsodont teeth
Tusk, ruminant cheek teeth, all permanent horse teeth, rabbit teeth
What are bunodont teeth
rounded cusps (think blunt)
What are lophodont
sharp-edged ridged teeth
What does anelodont mean
Limited teeth growth, develop roots
What is elodont
Continuous growth, no roots
Describe the growth of rabbit teeth
Elodont (need to have them clipped)
What is the difference between successional and non-successional teeth
Successional are deciduous teeth followed by permanent teeth (ex. incisors, canine, premolars) whereas non-successional teeth are permanent teeth that do not grow after deciduous teeth (ex. molars)
What is the tusk
Canine tooth in pigs
What are peg teeth
Second caudal row of incisors in lagomorph
What are wolf teeth
Rudimentary upper first premolar in horses
What are needle teeth
The deciduous third incisor and canine in piglets
What modified teeth make up the carnassials
4th premolar and 1st molar
What area of the mouth makes up quadrant 1 in the Triadan numbering system
Upper right
What makes up 01
Incisor nearest the midline
What makes up 04
Canine
What makes up 08
Premolar 4
Mesial
Pointing at the nearest neighbouring tooth towards the rostrum
Distal
Pointing at the nearest neighbouring tooth away from the rostrum
Labial
Away from oral cavity towards the lips
Buccal
Away from oral cavity towards cheek
Palatal
Into oral cavity towards the hard palate
Maxillary
Into oral cavity caudal to the hard palate (molars)
What provides innervation to the teeth
CNV2 (superior alveolar n, to maxilla) and CNV3 (inferior alveolar n, to mandible)
What arch is made up of the palatoglossal muscle, between the base of the tongue and the soft palate
Palatoglossal arch
What arch is between the pharynx and soft palate
Palatopharyngeal arch
What are the intrinsic muscles of the tongue
Vertical, longitudinal, transverse
What are the two extrinsic muscles of the tongue that do not attach to the tongue
Geniohyoid and mylohyoid
What nerve axons make up the lingual nerve
trigeminal (CNV3), parasympathetic, facial (CN VII)
What is the function of each axon of the lingual nerve
Parasympathetic: salivary glands
CN V3: general sensation to rostral 2/3
CN VII: taste to rostral 2/3
What is the role of the glossopharyngeal nerve for the tongue
taste and general sensation caudal 1/3
What is the role of CN X (vagus) for the tongue
taste caudal 1/3
What is the role of CN XII (hypoglossal) for the tongue
motor to all muscles
What is the blood supply to the tongue
Lingual a.
what is responsible for the cough reflex and sensory stimulation of the larynx
cranial laryngeal n.
