Transcript Identify the boundaries of the infratemporal fossa.

Identify the boundaries of the infratemporal fossa.
Temporal Fossa
Frontal
Parietal
Sphenoid
Temporal
Z
Boundaries:
Lateral=Ramus of Mandible
Anterior=Maxilla
Medial=Lat. Pterygoid Plate
Roof=Sphenoid
Maxilla
Lat. Pterygoid Plate
Pterygomaxillary Fissure
Infratemporal Fossa
Identify the muscles of mastication, their sources of innervation and
their major actions in chewing.
Temporalis
Lateral Pterygoid
* Innervated by Facial Nerve
Masseter
Articular disc
Buccinator*
Medial Pterygoid
During jaw opening the mandibular condyle and articular disc glide
anteriorly onto the temporomandibular eminence.
•This is brought about by the action of the superior head of the
lateral pterygoid muscle
The temporalis, masseter, medial pterygoid and the inferior head of
the lateral pterygoid all participate in jaw closing.
•Side-to-side grinding is produced by cooperative actions of one
masseter and the contralateral medial pterygoid.
Temporomandibular eminence
Follow the course of the major nerves supplying structures and
passing through the infratemporal fossa.
Identify the parotid, submandibular and sublingual salivary glands. Trace the course of their
innervation and follow the flow of saliva from each gland to the mouth.
Lesser petrosal n.
Auriculotemporal n.
Otic ganglion.
Facial n..
Chorda tympani
Inferior alveolar n.
Lingual n.
Submandibular ganglion.
Innervation of the Lacrimal Gland
N. of pterygoid canal
Greater petrosal
V2
V1
V2
Facial
Deep petrosal
V3
Sup. Cervical gang. Pterygopalatine gang.
Internal carotid a.
Trace the flow of blood through the maxillary artery and its major
branches. Trace the flow of blood into the nasal and oral cavities.
Ant. Deep Temporal
Post. Deep Temporal
Infra-orbital
Ant. Deep Temporal
Post. Deep Temporal
Sphenopalatine
V3
Septal brr.
Maxillary
Ext. Cartotid
Middle
Meningeal
Descending palatine
Greater palatine
Lesser palatine Ext. Cartotid
Post. Sup. Alveolar
Inf. Alveolar
Trace the flow of air into each of the paranasal sinuses, note the communication with
the nasal cavity the relationships of each sinus to the oral, orbital and cranial cavities.
Frontal sinus
Sup. Concha
Spheno-ethmoid recess
Sup.
meatus
Sphenoidal sinus
Ethmoid
bulla of
Middle
meatus
Middle Concha
Inf. Concha
Inf. meatus
Opening to
Maxillary
Sinus
Sup. Concha
Identify the extrinsic and intrinsic muscles of the tongue, their innervation, and actions.
Identify the muscles of the soft palate, their innervation and major actions.
Hard Palate
Palatoglossus Palatopharyngeus
Styloglossus
Stylopharyngeus
Stylohyoid
Mandible (cut)
Tensor veli palatini
Genioglossus
Geniohyoid
Mylohyoid (cut)
Hyoglossus
Hyoid Bone
V3
VII
IX
Pharyngeal plexus
XII
Palatoglossus
Levator veli palatini
Sup. Constrictor
Palatopharyngeus