TMJ Flashcards
What are the joint classifications of the temporomandibular joint?
Complex joint, diarthrosis condylar, diarthrosis bicondylar, diarthrosis arthrodia, diarthrosis ginglymus
What are the extracapsular ligaments of the temporomandibular joint?
temporomandibular/lateral ligament, sylomandibular ligament, sphenomandibular ligament
What does the lateral/ temporomandibular ligament represent?
A thickening of the fibrous capsule of the temporomandibular joint.
What does the stylomandibular ligament represent?
a thickening of the deep cervical fascia
What does the sphenomandibular ligament represent?
a remnant of Meckel’s cartilage of the first branchial arch
What muscles act to depress the mandible?
lateral pterygoid along with suprahyoid and infrahyoid muscles
What muscles act to elevate the mandible?
temporalis, masseter and medial pterygoid
What muscles act to protract the mandible?
masseter, medial pterygoid and lateral pterygoid
What muscles act to retract the mandible?
temporalis
what muscles act during the action of grinding on the temporomandibular joint?
ipsilateral temporalis, contralateral medial pterygoid and lateral pterygod and both masseters.
Peripheral sensory processes from the temporalis muscle and conveyed in the trigeminal nerve have been shown to originate from primary afferent neurons in what location?
mesencephalic nucleus of the trigeminal nerve
Which of the cranial nuclei of termination contain primary afferent neurons?
mesencephalic nucleus of the trigeminal nerve
