Joints, Muscles, Nerves and Vessels of the Skull Flashcards
Where does the tempromandibular ligament attach?
From the zygomatic arch to the neck of the condyle
The tempromandibular ligament is the lateral part of this
Capsular ligament
Where does the stylomandibular ligament attach?
From the styloid process of the temporal bone to the posterior angle of the mandible
Where does the sphenomandibular ligament attach?
From the angular spine of the sphenoid to the lingula of the mandible
What is the origin of the masseter muscle?
Zygomatic arch
What is the insertion of the masseter muscle?
Lateral angle of the mandible
What movement does the masseter muscle provide?
Elevates the mandible
What is the origin of the temporalis muscle?
Temporal fossae
What is the insertion of the temporalis muscle?
Temporal crest of the mandible
What anterior movement does the temporalis muscle provide?
Elevate and position the mandible
What is the posterior movement of the temporalis muscle provide?
Retrude and position the mandible
What is the origin of the medial pterygoid muscle?
Pterygoid fossa
What is the insertion of the medial pterygoid muscle?
Medial angle of the mandible
What movement is the medial pterygoid muscle responsible for?
Elevate the mandible
What is the origin of the superior head of the lateral pterygoid muscle?
Infra temporal surface of the sphenoid bone
What is the insertion of the lateral pterygoid muscle?
Neck of the condyle
When both lateral pterygoid muscles are working together, what movement are they responsible for?
Protrude and depress the mandible
When only one lateral pterygoid is working, what movement is it responsible for?
Lateral movement toward the other side
Group of muscles that attach from the hyoid bone down to the sternum or clavicle
Infrahyoid group
Group of muscles that attach from the hyoid bone up to the mandible
Suprahyoid group
Together the supra and infra hyoid groups are responsible for this movement
Retrude and depress the mandible
Where does the geniohyoid muscle insert?
Genial tubercles of the mandible
Where does the mylohyoid muscle insert?
Mylohyoid ridge of the mandible
The cheek muscle
Buccinator muscle
Muscle that surrounds the lips as the pucker muscle
Orbicularis oris
The smile muscles that elevate the upper lip
Levator labii superioris
Levator anguli oris
The frown muscles that depress the lower lip
Depressor labii inferioris
Depressor anguli oris
Muscle in the chin area that can make it difficult to access the lower teeth if it is tense
Mentalis muscle
Thin muscle that covers the front of the neck just under the skin
Platysma
Muscle that goes from the mastoid process to the sternum and clavicle
Sternocleidomastoid muscle
Division I of the trigeminal nerve
Ophthalmic
This division of the trigeminal nerve goes to the skin of the nose and forehead
Ophthalmic
Area located between the greater and lesser wings of the sphenoid bone where the Ophthalmic division of the trigeminal nerve innervates.
Superior orbital fissure
Division of the trigeminal nerve that exits the brain through the foramen rotundum
Maxillary, Division II
Branch of the Maxillary Division of the trigeminal nerve that branches off within the pterygoid fossa. It gives off 3 branches
Pterygopalatine
The three branches of the Pterygoid palatine branch of the maxillary branch of the trigeminal nerve.
Nasopalatine, greater palatine, and middle and posterior palatine
Branch of the pterygopalatine that passes along the nasal septum in the nasal cavity
Nasopalatine
What does the nasopalatine nerve pass through?
Incisive canal
Where does the nasopalatine innervate?
Front of the palate
Branch of the pterygpopalatine that goes to the posterior portion of the hard palate
Greater (anterior) palatine
That does the greater palatine nerve pass thorough?
Greater palatine foramen
Where does the middle and posterior palatine branches of the pterygopalatine enter the palate?
Lesser palatine foramen
Branch of the maxillary branch of the trigeminal nerve that splits off within the pterygopalatine fossa.
Posterior Superior Alveolar (PSA)
The posterior superior alveolar branch passes through this opening into the maxillary sinus.
Alveolar canal
What does the Posterior Superior Alveolar branch innervate?
Pulp of the maxillary molars. Except the mesiobuccal root of the first molar
Branch of the Maxillary branch of the trigeminal nerve that splits off into the MSA and ASA.
Infraorbital nerve
Branch of the infraorbital nerve that passes along the wall of the maxillary sinus to the pulp of the maxillary premolars and the mesiobuccal root of the first molar
Middle Superior Alveolar (MSA)