2011 AAEP Focus on Dentistry
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| What 2 important structures must one avoid damaging when accessing EQ paranasal sinuses? | infraorbital canal
nasolacrimal duct
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| 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
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| How does the equine conchofrontal sinus communicate with the nasal cavity? | indirectly, via the caudal maxillary sinus
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| How do the chonchofrontal and sphenopalatine sinuses communicate 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
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| What are the 2 main mastication muscles in horses? | masseter and pterygoid muscles
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| What structures form the conchofrontal sinus? | frontal sinus of the horse is continuous with the dorsal conchal sinus
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| How does the size of the paranasal sinuses change as a horse ages? | get bigger
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| Which conchal sinus generally communicates with the rostral maxillary sinus? | The ventral conchal sinus is usually associated with the rostral maxillary
sinus
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| What are ethmoidal conchae? | small scrolls attached to the cribriform plate that
separates the nasal cavity from the cranial cavity
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| 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
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| Which cranial nerves course in close proximity to the sphenopalatine sinus? | optic nerve (CN 2) dorsally and cranial nerves 3, 4, 5, and 6 lie lateral to this
sinus
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| In what direction(s) are the Equine mandible designed to move? | designed to permit lateral to medial movement of the mandible
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| What components comprise the TMJ joint? | mandibular condyle and the
articular facet on the temporal
bone
space between is filled with a fibrocartilagenous disc
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| Which horse breeds commonly have a pronounced curve of Spee? | Arabs and Welsh ponies
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| Which lymph node is the primary receptacle for lymphatic drainage from the mandibular teeth? | mandibular lymph node (Staszyk JVD 2005)
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| Which lymph node may be more frequently involved in drainage of infection from maxillary teeth? | medial retropharyngeal (Staszyk JVD 2005)
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| What kind of cartilage covers the articular surface of the TMJ joint? | fibrocartilage
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| What nerve innervates the TMJ joint? | mandibular branch of the trigeminal nerve
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| What parts of the zygomatic process of the temporal bone constitute the TMJ joint? | articular tubercle, mandibular fossa, retroarticular process
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| which physiological diastema is usually longer in horses/foals? | maxillary
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| when the maxillary physiologic diastema is longer than the mandibular diastema, which malocclusion is present? | longer max diastema is not always associated with overjet malocclusion, it is commonly the case in most horses
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| what is the growth mechanism of the maxilla? what is the growth mechanism of the mandible? | max: endochondral ossification
mand: endhochondral ossification and indpendent epiphyseal growth
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