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EQ peridental anat
2011 AAEP Focus on Dentistry
| Question | Answer |
|---|---|
| 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 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 |
| 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 (CN 2) 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) |
| What kind of cartilage covers the articular surface of the TMJ joint? | fibrocartilage |
| What nerve innervates the TMJ joint? | mandibular branch of the trigeminal nerve |
| What parts of the zygomatic process of the temporal bone constitute the TMJ joint? | articular tubercle, mandibular fossa, retroarticular process |
| which physiological diastema is usually longer in horses/foals? | maxillary |
| 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 |
| 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 |
Created by:
lamarron
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