Lecture 34 - Ungulate Head Structures Flashcards
what is the fossa linguae
deep transverse fissure between apex and body
what it the torus linguae
prominent dorsal bulge to body of tongue
the fossa linguae and torus linguae are prominent in what animals
ruminants
what are the closure muscles of mastication
- temporalis
- masseter
- pterygoideus
what are the opening muscles of mastication
- diagastricus
- occipitomandibularis (horse)
what is the location of the palatine tonsils
oropharynx
in ruminants where are the palatine tonsils? what kind of structure is this?
tonsilar sinus
T/F: the horse has lingual and palatine tonsils
TRUE
T/F: the pig has palatine tonsils
FALSE - has tonsils of the soft palate
an immature horse has _____ teeth and an adult horse has _____
24; 36-44
T/F: canines are commonly vestigial or unerupted in female horses
TRUE
give the formula for horse deciduous teeth
3 : 0 : 3 : 0
3 : 0 : 3 : 0
give the formula for horse permanent teeth
3 : 1 : 3/4 : 3
3 : 1 : 3/4 : 3
what are the wolf teeth in the horse
PM1
what is the tooth infundibulum
enamel cups filled with cementum found in incisors and maxillary cheek teeth in the horse
what provides aging cues
incisor infundibula
what surrounds the maxillary teeth of the horse
maxillary sinuses
what surrounds the mandibular teeth of the horse
mandibular cortex
what are eruption bumps
normal occurrence of apices of erupting teeth as bone thins
hypsodont
- long (high) crowned teeth and short roots like incisors or cheek teeth
- grow to a certain length and continuously erupt until the tooth expires
- roots form after many years
brachydont
- short crowned teeth and well-developed roots like canine and PM1
- grow to certain length and stop
- mostly root
what are the 5 surfaces of each tooth
- vestibular (buccal or labial)
- lingual or palatal
- mesial
- distal
- occlusal
anisognathous
different width of jaws
where do enamel points develop that need floating in an equine patient
maxillary buccal and mandibular lingual points
