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Anat: Temporal and Infratemporal Regions
Exam 2: Lecture 4
52
Anatomy
Graduate
09/08/2013

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Term
area located *above zygomatic arch
Definition
temporal fossa
Term
infratemporal fossa is located *below
Definition
zygomatic arch
Term
bones of skull which articulate to form *temporal fossa
Definition

1) frontal

2) parietal

3) temporal

4) (greater wing of) sphenoid

5) zygomatic

Term
bones of skull which articulate to form *infratemporal fossa
Definition

1) maxillary

2) sphenoid

3) temporal

4) zygomatic

Term
mental arteries and nerves pass through this structure located on the mandible
Definition
mental foramen
Term
foramen of, or associated with, infratemporal region: for V3 & lesser petrosal N. (parasympathetics-CN IX)
Definition
foramen ovale
Term
foramen of, or associated with, infratemporal region: for middle meningeal A.
Definition
foramen spinosum
Term
foramen of, or associated with, infratemporal region: for inferior alveolar N.
Definition
mandibular foramen
Term
foramen of, or associated with, infratemporal region: for chorda tympani N.
Definition
petrotympanic fissure
Term
foramen of, or associated with, infratemporal region: for infraorbital part of maxillary A.
Definition
pterygomaxillary fissure
Term
foramen of, or associated with, infratemporal region: for canal to tympanic membrane
Definition
external acoustic meatus
Term
ligaments of infratemporal fossa: function
Definition
support & stabilize mandible
Term
ligament attaching superiorly to styloid process and inferiorly to angle of mandible
Definition
stylomandibular ligament
Term
ligament attaching superiorly to sphenoid spine and inferiorly to lingula of mandibular ramus
Definition
sphenomandibular ligament
Term
ligament laterally reinforcing articular capsule of TMJ
Definition
lateral ligament
Term
structure of TMJ located between mandibular fossa of temporal bone and head of mandible bone
Definition
articular disk
Term
blood and N. supply to TMJ enter joint from this direction
Definition
posteriorly
Term
chief blood supply to TMJ
Definition
superficial temporal and maxillary A.s
Term
chief N. supply to TMJ
Definition
auriculotemporal N. (branch of CN V3-mandibular N. branch of trigeminal N.)
Term
all 4 M.s of infratemporal fossa: innervation
Definition
motor branches of CN V3 (mandibular N. branch of trigeminal N.)
Term
4 M.s of temporal/infratemporal fossa
Definition

1) masseter M.

2) temporalis M.

3) lateral pterygoid M.

4) medial pterygoid M.

Term
M.s of mastication which all work in *forceful elevation of the mandible
Definition

1) masseter M.

2) temporalis M.

3) medial pterygoid M.

Term
M. of mastication which *deviates mandible to contralateral side
Definition
medial pterygoid M.
Term
M. of mastication which *protracts mandible
Definition
lateral pterygoid M.
Term
M. of mastication which *retracts mandible
Definition
temporalis M.
Term
masseter M.: origin/insertion
Definition
O: zygomatic arch I: external surface of mandible
Term
temporalis M.: origin/insertion
Definition
O: temporal fossa on lateral side of skull I: coronoid process of mandible
Term
lateral pterygoid M.: origin/insertion
Definition
O: lateral side of lateral pterygoid plate I: neck of mandible and articular disk of TMJ
Term
medial pterygoid M.: origin/insertion
Definition
O: medial side of lateral pterygoid plate I: internal surface of mandible
Term
sensory N. branch of V3 in infratemporal fossa: N. supplying *cheek with sensory fibers
Definition

buccal N.

NOTE: this does NOT innervate buccinator M., that is accomplished by CN VII (facial N.)

Term
sensory N. branch of V3 in infratemporal fossa: N. which courses posteriorly between TMJ and external acoustic meatus & supplies sensation to *auricle, *parotid, and *temporal region
Definition
auriculotemporal N.
Term
sensory N. branch of V3 in infratemporal fossa: N which enters the *mandibular foramen on medial surface of rams; prior to entering the mandibular foramen, it gives off *mylohyoid N. (motor inn. to mylohyoid M. & anterior belly of digastric M.)
Definition
inferior alveolar N.
Term
sensory N. branch of V3 in infratemporal fossa: terminal N. branch of *inferior alveolar N. that exits via the *mental foramen to innervate skin of *chin, *lower lip, & *gum
Definition
mental N.
Term
sensory N. branch of V3 in infratemporal fossa: N. which innervates anterior 2/3rds of *tongue (*SPECIAL SENSE); is joined by *chorda tympani N.
Definition
lingual N.
Term
motor N. branches of V3: innervates (2)
Definition

1) all 4 M.s of mastication (masseter M., temporalis M., lateral pterygoid M., & medial pterygoid M.)

2) N. to mylohyoid (mylohyoid M. & anterior belly of digastric M.)

Term
sensory N. branch of *V2 in infratemporal fossa: N. innervating *posterior upper (maxillary) teeth & *gingiva; branches from V2 in *pterygopalatine fossa, through pterygomaxillary fissure, and into infratemporal fossa
Definition
posterior superior alveolar N.
Term
structure which lies on medial side of V3 at foramen ovale; provides *parasympathetic inn. to *parotid gland
Definition
otic ganglion
Term
branch of *facial N. which arises in middle ear, leaving middle ear through *petrotympanic fissure & enters infratemporal fossa to join *lingual N.; provides inn. to anterior 2/3rds of *tongue (*SPECIAL SENSE)
Definition
chorda tympani N.
Term
N. forming autonomic preganglionic *parasympathetic fibers that terminate in *submandibular ganglion; postganglionic fibers continue on to innervate *submandibular & *sublingual glands
Definition
chorda tympani N.
Term
A. supplying temporal & infratemporal regions; 1 of the 2 terminal branches of external carotid A. (the other is superficial temporal A.)
Definition
maxillary A.
Term
V. network providing drainage to temporal & infratemporal regions; surrounds the maxillary A.; drains into maxillary V.-->superficial temporal V.-->retromandibular V.-->IJ V.
Definition
pterygoid plexus
Term
(notes to be added after lecture)
Definition
inferior alveolar N. block
Term
(notes to be added after lecture)
Definition
TMJ arthritis
Term
(notes to be added after lecture)
Definition
TMJ dislocation
Term
maxillary A.: divided into 3 parts according to the vessel's relation to this M.
Definition
lateral pterygoid M.
Term
branches in first part of maxillary A.: A. supplying external acoustic meatus
Definition
deep auricular A.
Term
branches in first part of maxillary A.: A. supplying middle ear (tympanic cavity)
Definition
anterior tympanic A.
Term
branches in first part of maxillary A.: A. supplying *meninges covering the brain; *most important arterial supply to *dura mater; *main source of epidural hematoma; enters skull through *foramen spinosum
Definition
middle meningeal A.
Term
branches in first part of maxillary A.: A. which enters skull though foramen ovale
Definition
accessory meningeal A.
Term
branches in first part of maxillary A.: enters mandible via *mandibular foramen with N. of the same name; supplies *teeth
Definition
inferior alveolar A.
Term
second part of maxillary A. gives off ___
Definition
muscular branches
Term
third part of maxillary A. goes to ___ (2 areas)
Definition
pterygopalatine & infraorbital parts
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