The document discusses the anatomy of local anesthesia, including: 1. It describes the trigeminal nerve which has both motor and sensory functions, with the sensory divisions being ophthalmic (V1), maxillary (V2), and mandibular (V3). 2. It lists the branches of each sensory division of the trigeminal nerve and the areas they innervate. 3. It discusses landmarks on the maxilla and mandible important for administering local anesthesia.

1. Anatomy of Local AnesthesiaAnatomy of Local Anesthesia
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2. Trigeminal NerveTrigeminal Nerve
MotorMotor (Mandibular (V3) division only)(Mandibular (V3) division only)
Muscles of MasticationMuscles of Mastication
MylohyoidMylohyoid
Digastric (anterior belly)Digastric (anterior belly)
Tensor tympaniTensor tympani
Tensor veli palatiniTensor veli palatini

3. Trigeminal NerveTrigeminal Nerve
SensorySensory
Ophthalmic (V1)Ophthalmic (V1)
Maxillary (V2)Maxillary (V2)
Mandibular (V3)Mandibular (V3)

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7. Ophthalmic (V1)Ophthalmic (V1)
NasociliaryNasociliary
FrontalFrontal
LacrimalLacrimal

10. Maxillary (V2)Maxillary (V2)
AlveolusAlveolus
Posterior superior alveolar (PSA)Posterior superior alveolar (PSA)
Middle superior alveolar (MSA)Middle superior alveolar (MSA)
Anterior superior alveolar (ASA)Anterior superior alveolar (ASA)
PalatePalate
NasopalatineNasopalatine
Greater palatineGreater palatine
Lesser palatineLesser palatine

18. Mandibular (V3)Mandibular (V3)
Inferior alveolarInferior alveolar
Mental branchMental branch
Incisive branchIncisive branch
BuccalBuccal
LingualLingual
MylohyoidMylohyoid
AuriculotemporalAuriculotemporal

25. Landmarks - MaxillaLandmarks - Maxilla
Canine eminenceCanine eminence
Canine fossaCanine fossa
TuberosityTuberosity
Palatal processPalatal process

26. Landmarks - MaxillaLandmarks - Maxilla
Infraorbital foramenInfraorbital foramen
Incisive foramenIncisive foramen
Greater palatine foramenGreater palatine foramen

28. Landmarks - MandibleLandmarks - Mandible
Condylar headCondylar head
Condylar neckCondylar neck
Coronoid processCoronoid process
Coronoid notchCoronoid notch
Sigmoid (mandibular) notchSigmoid (mandibular) notch

29. Landmarks - MandibleLandmarks - Mandible
Mental foramenMental foramen
Mandibular foramenMandibular foramen
LingulaLingula
Mylohyoid lineMylohyoid line