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22 Cards in this Set
- Front
- Back
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describe the major landmarks of the inferior surface of the skull |
lateral pterygoid plates medial pterygoid plates zygomatic arches pharyngeal tubercle foramen ovale/spinosum foramen magnum |
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what attaches to the medial pterygoid plates and the pharyngeal tubercle |
the pharynx |
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describe the infratemporal fossa boundaries |
laterally: medial pterygoid plates and ramus of mandible
anteriorly: posterior surface of maxilla posteriorly: mandibular fossa (TMJ), styloid process, carotid canal superior: wing of sphenoid bone inferior: medial pterygoid muscles |
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describe the tempomandibular joint |
mandibular fossa head of mandible synovial joint (no hyaline cartilage) between styloid process and posterior surface of maxilla articular disc inside-- sliding and hinge, open mouth articular tubercle |
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what are the ligaments of the tempomandibular joint |
temporomandibular ligament sphenomandibular ligament stylomandibular ligament |
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describe the motor portion of CN V3 |
MAST MATT MASTication Mylohyoid Anterior digastric Tensor tympani (eardrum) Tensor veli palatini (soft palate) |
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describe the temporalis muscle |
just deep to temples skull to coranoid process on jaw closes and retracts jaw ant, post deep temporal nerve |
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describe the masseter muscle |
from zygomatic bone to lower jaw closes jaw nerve to masseter |
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describe the lateral and medial pterygoid muscles |
lateral: lateral side of lateral pterygoid plate, 2 heads, anterior to posterior pull anteriorly, opens mouth medial: medial side of lateral pterygoid plate, like masseter but inside, opens mouth and move from side to side |
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describe the contents of the infratemporal fossa |
lateral and medial pterygoid muscles maxillary artery and branches branches of mandibular nerve (CN V3) pterygoid venous plexus |
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describe the arteries in the infratemporal fossa |
external carotid--> maxillary artery (relative to lateral pterygoid muscle) 3 parts (1 holes, 2 muscles, 3 holes) |
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describe the first section of the maxillary artery |
holes middle meningeal through foramen spinosum inferior alveolar artery through mandibular foramen |
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describe the second section of the maxillary artery |
muscles deep temporal arteries (2) to temporal muscles lateral and medial pterygoid and masseter branches buccal artery to inner cheek |
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describe the third section of the maxillary artery |
holes to pterygopalatine fossa (through pterygomaxillary fissure) infraorbital artery through infraorbital canal superior alveolar arteries (anterior, middle, posterior) to teeth |
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describe the nerve that runs with the maxillary artery |
V2 of trigeminal nerve maxillary nerve same name and destination as artery |
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describe the components of the V3 nerve |
main trunk: meningeal branch (sensory to dura) nerve to medial pterygoid anterior division: nerves to temporalis (2), masseter and lateral pterygoid muscles buccal nerve (sensory to cheek) posterior division: auriculotemporal nerve (sensory and parasymp) inferior alveolar nerve (sensory and motor) lingual nerve (sensory and parasymp) |
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describe parasympathetic nerves in the head |
2 neuron pathway 1st is part of CN 3, 7 or 9 synapse in parasympathetic ganglion 2nd travels with branch of CN 5 controls pupil and lens of eye for reading secretion of tears, mucus and saliva |
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describe the anterior division of CN V3 |
deep temporal nerve: right on skull deep to temporalis m nerve to lateral pterygoid buccal nerve |
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describe the posterior division of CN V3 |
Auriculotemporal nerve: lateral through foramen ovale to ear sensory to auricle and temporal skin parasympathetic to parotid gland inferior alveolar nerve through mandibular foramen branches to mylohyoid to m and anterior digastric mental nerve through mental foramen (cutaneous) lingual nerve (more medial) sensory to anterior 2/3 of tongue chorda tympani joins lingual= special sensory of taste, parasymp to salivary glands |
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describe the pterygoid venous plexus |
venous plexus within lateral pterygoid muscle connections from facial vein to cavernous sinus |
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describe the pterygopalatine fossa |
posterior: pterygoid plates of sphenoid anterior: palatine bones of palate (medial to maxilla) pterygopalatine fissure= opening |
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describe the nerves of the pterygopalatine fossa |
nerve of maxilla (V2 of trigeminal) through foramen rotundum pterygopalatine ganglion (parasympathetic) enter as nerve of pterygoid canal, synapse at ganglion join branches of V coming out infraorbital nerve anterior superior alveolar nerve middle superior alveolar nerve posterior superior alveolar neve greater and lesser palatine nerves nasopalatine nerve (sphenopalatine artery) |
