Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
|
trismus
|
spasm of masticatory muscles associated with difficulty opening or locking of the jaw
Caused by TMJ inflammation TMJ pain dysfunction Mandibular blocks Extraction of wisdom teeth Tetanus |
|
|
subluxation
|
mandibular dislocation (aka = “locked jaw”)
Condyles get stuck anterior to the articular tubercle of temporal bone To relocate, push down and back |
|
|
Which muscles cause depression of mandible
|
condyles move down and forward
*Lateral Pterygoid Suprahyoid Infrahyoid |
|
|
Which muscles cause elevation of mandible
|
condyles move up and backward
*Masseter *Temporalis *Medial Pterygoid |
|
|
Which muscles cause protrusion of mandible
|
condyles & discs move down and forward
*Lateral Pterygoid major contributor *Medial Pterygoid minor contributor |
|
|
Which muscles cause Retrusion of mandible
|
condyles & discs move up and backwards
*Masseter *Temporalis |
|
|
Which muscles cause Contralateral Excursion
|
*Lateral Pterygoid
*Medial Pterygoid |
|
|
Which muscles cause Ipsilateral Excursion
|
*Masseter
*Temporalis |
|
|
Lateral Pterygoid
|
Depresses and Protrudes mandible
|
|
|
Medial Pterygoid
|
Elevates and Protrudes mandible
|
|
|
Masseter
|
Elevates and Protrudes mandible
|
|
|
Temporalis
|
Elevates and Retrudes mandible
|
|
|
Which muscle plays the greatest role in masticatory forces
|
Masseter
|
|
|
What nerve innervates muscles of mastication
|
Mandibular Nerve - Trigeminal V3
|
|
|
What part of the brain is responsible for the chewing reflex
|
Reticular Formation in brainstem
|
|
|
What initiates chewing reflex
|
Bolus of food touches inner surface of mandible causing inhibiting of masticatory muscles, dropping mandible
|
|
|
Unfavorable Fracture
|
Posterior fragment is pulled upward and inward by muscles of mastication
Anterior fragment is pulled downward and backwards by suprahyoid muscles Causes noticeable displacement and malocclusion Requires an open reduction involving jaw plates and wires to immobilize during healing |
|
|
Favorable Fractures
|
Fracture in which there is not malocclusion or asymmetry of the face caused by muscles pulling on pieces
Requires closed reduction that only involves wiring for natural healing |
|
|
What part of the brain is centrally responsible for Gag Reflex
|
Vomit center in the medulla
|
|
|
What nerves innervate gag reflex
|
CN V, IX, X, XII
|
|
|
Touching what structures induce the gag reflex
|
Soft palate
Pharyngeal arches Vocal Cords Epiglottis |
