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EQ peridental anat

2011 AAEP Focus on Dentistry

What 2 important structures must one avoid damaging when accessing EQ paranasal sinuses? infraorbital canal nasolacrimal duct
Via what structure, and into what compartment, do the paranasal sinuses communicate with the nasal passages? paranasal sinuses drain into the middle nasal meatus via slit like nasal maxillary apertures that come from both the rostral and caudal maxillary sinuses
How does the equine conchofrontal sinus communicate with the nasal cavity? indirectly, via the caudal maxillary sinus
How do the chonchofrontal and sphenopalatine sinuses communicated with the caudal maxillary sinus? conchofrontal sinus drains into the dorsal aspect of the caudal maxillary sinus the small sphenopalatine sinus drains into the ventral part of the caudal maxillary sinus
What are the 2 main mastication muscles in horses? masseter and pterygoid muscles
What structures form the conchofrontal sinus? frontal sinus of the horse is continuous with the dorsal conchal sinus
How does the size of the paranasal sinuses change as a horse ages? get bigger
Which conchal sinus generally communicates with the rostral maxillary sinus? The ventral conchal sinus is usually associated with the rostral maxillary sinus
What are ethmoidal conchae? small scrolls attached to the cribriform plate that separates the nasal cavity from the cranial cavity
Where is the nasolacrimal duct located? extends from the medial aspect of the orbit to the floor of the nostrils. Most of its course is in the maxillary bone where it protrudes into the maxillary sinus
Which cranial nerves course in close proximity to the sphenopalatine sinus? optic nerve dorsally and cranial nerves 3, 4, 5, and 6 lie lateral to this sinus
In what direction(s) are the Equine mandible designed to move? designed to permit lateral to medial movement of the mandible
What components comprise the TMJ joint? mandibular condyle and the articular facet on the temporal bone space between is filled with a fibrocartilagenous disc
Which horse breeds commonly have a pronounced curve of Spee? Arabs and Welsh ponies
Which lymph node is the primary receptacle for lymphatic drainage from the mandibular teeth? mandibular lymph node (Staszyk JVD 2005)
Which lymph node may be more frequently involved in drainage of infection from maxillary teeth? medial retropharyngeal (Staszyk JVD 2005)
Created by: lamarron