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Head and Neck 2 > Temporal, Infratemporal, Pterygopalatine Fossae > Flashcards

Temporal, Infratemporal, Pterygopalatine Fossae Flashcards

1
Q

Temporal and Infratemporal fossae

Location

A
  • Interconnected Spaces
  • Temporal fossa
    • Superior
    • Related to temple
    • Above zygomatic arch
  • Infratemporal Fossa
    • Inferior
    • Wedge-shaped space
    • Deep to masseter and ramus of mandible
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2
Q

Border of temporal Fossa

5 borders

A
  • Superior border
    • Superior to temporal line
  • Inferior border
    • Zygomatic arch
  • Anterior border
    • Frontal process of zygomatic bone
    • Zygomatic process of frontal
  • Posterior border
    • Superior temporal line
  • Medial border
    • Temporal bone, frontal bone, parietal bone and greater wing of sphenoid
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3
Q

Contents of temporal fossa

A

Temporalis m

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4
Q

Arterial and venous supply to temporal fossa

3 Arteries

5 Veins

A
  • Superficial temporal a (ECA)
    • Middle temporal a.
  • Deep temporal ant and post (Maxillary a.)
  • Venous draingae
    • Superficial temporal v.
    • Middle temporal v
    • Deep temporal (Ant/post)
    • Maxillary vein
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5
Q

Innervation of temporal fossa

Motor and Cutaneous

A
  • Deep temporal nerves (V3)
    • Motor to temporalis
  • Auriculotemporal nerve (V3)
    • Cutaneous
  • Zygomaticotemporal n (V2)
    • Cutaneous
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6
Q

Borders of Infratemporal

Superior/roof

Inferior/floor

A
  • Superior roof
    • Greater wing of sphenoid
    • Foramen ovale and spinosum
  • Inferior/floor
    • No anatomic floor
    • Ends where medial pterygoid attaches to mandible
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7
Q

Borders of infratemporal fossa

Lateral and medial walls

A
  • Lateral
    • Ramus
    • Coronoid process
  • Medial
    • Lateral pterygoid palate
    • Superior constrictor muscle
    • Palatine bone
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8
Q

Borders of infratemporal fossa

Anterior and posterior walls

A
  • Anterior
    • Posterior maxilla
  • POsterior
    • Temporal Bone
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9
Q

Infratemporal fossa

Bony landmarks 6

A
  • Foramen ovale
  • Foramen spinosum
  • Mandibular fossa
  • Inferior temporal fissure
  • Petrotympanic fissure
  • Pterygomaxillary fissure
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10
Q

Sphenomandibular ligament

what is it

Attachment

A
  • Extracapsular ligament of TMJ
  • Attaches to sphenoid bone and lingula of mandible
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11
Q

Foramen Ovale Contents 4

A
  • Mandibular nerve V3
  • Lesser petrosal n. CN 9
  • Emissary veins
    • Traveling from cavernous sinus–> pterygoid plexus
  • Otic ganglion is inferior to ovale
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12
Q

Mandibular fossa

A

TMJ

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13
Q

Petrotympanic fissure contents

3

A
  • Chorda tympani CN 7
  • Anterior tympanic artery
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14
Q

Foramen Spinnosum contents 3

A
  • Middle meningeal a. through loop of auriculotemporal nerve
  • Middle meningeal v.
  • Meningeal nerve V3
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15
Q

Inferior orbital fissure contents

4

A
  • Zygomatic n and infraorbital n of V2
  • Ascending branches of pterygopalatine ganglion
  • Infraorbital vessels
  • Inferior division of opthalmic vein (directly connects to cavernous sinus?)
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16
Q

Pterygomaxillary fissure of Infratemporal fossa

What does it serve as

Contents 4

A
  • Doorway between infratemporal fossa and pterygopalatine fossa
  • Structures
    • PSA n from V2
    • PSA a and v
    • 3rd part of Maxillary artery, PSA only
    • Pterygoid plexus
17
Q

Infratemporal fossa arterial supply

A
  • Mandibular of maxillary
    • all branches
  • Pterygoid of maxillary a
    • all branches
  • Pterygopalatine of maxillary a
    • ONLY PSA
18
Q

Venous drainage of infratemporal fossa

A
  • Pterygoid plexus
    • Communicates with cavernous sinus
      • Pharyngeal venous plexus
      • facial v
      • Opthalmic v
  • Most common site of hematomas from intraoral injections (PSA)
19
Q

Innervation of infratemporal fossa 5

A
  • V2
  • V3 (passes through foramen ovale)
  • CN VII
  • CN IX
  • Otic ganglion
20
Q

Pterygopalatine fossa

boundaries

A
  • Superior/roof
    • Greater wing of sphenoid, palatine
  • Inferior, floor
    • Pyramidal process of palatine
  • Anterior
    • Maxilla
  • Posterior
    • Pterygoid plates, Sphenoid
  • Medial
    • Palatine
  • Lateral
    • none
    • opens to infratemporal fossa, pterygomaxillary fissure
21
Q

Pterygopalatine contents

3

A
  • Maxillary nerve V2
  • Maxillary artery
  • Pterygopalatine ganglion
22
Q

Pterygopalatine fossa 7 openings

A
  • Inferior orbital
  • Sphenopalatine foramen
  • Foramen rotundum
  • Pterygoid canal
  • Palatovaginal canal
  • Palatine canal
  • Pterygomaxillary foramen
23
Q

Foramen rotundum***

connects

structures

A
  • Connects pterygopalatine fossa to middle cranial fossa
  • Maxillary nerve V2
24
Q

Pterygoid canal

Connects

Contains 2

A
  • Connects to middle cranial fossa of cranial cavity
  • Vidian n. (Nerve of pterygoid)
    • Pierces cartilage covering foramen lacerum
  • Pterygoid artery
25
Q

Palatovaginal canal

Connects to

Contains 2

A
  • Connects to nasopharynx
  • Pharyngeal nerve
  • Pharyngeal artery
26
Q

Palatine canal

Connects to

Contains 3

A
  • Connects to roof of oral cavity (palate)
  • Greater/ Lesser Palatine n. V2
  • Greater lesser palatine artery
  • Greater/lesser palatine vein
27
Q

Pterygomaxillary fissure of Pterygopalatine fossa

Connects to

Contains 4

A
  • Connects to infratemporal fossa
  • PSA n. V2
  • PSA artery, 3rd branch of Max. a
  • PSA vein
  • Pterygoid Plexus
28
Q

Infraorbital fissure

Connects to

Contains 5

A
  • Connects to floor of orbit
  • Zygomatic n. V2
  • Infraorbital V2
  • Pterygopalatine ganglion branches
  • Infraorbital vessels
  • Inferior opthalmic vein
29
Q

Sphenopalatine foramen

Connects to

Contains

A
  • Connects to nasal cavity
  • Nasopalatine n. V2
  • Sphenopalatine vessels
30
Q

Arterial supply to Pterygopalatine fossa

A

3rd branch of maxillary artery

31
Q

Innervation of Pterygopalatine fossa

A

V2

Head and Neck 2 (15 decks)

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