temporal fossa Flashcards

exam 1

1
Q

wedge-shaped space deep to the masseter muscle and underlying ramus of the mandible

A

infratemporal fossa

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2
Q

above the sygomatic arch, communicates with infratermporal fossa through the gap between the zygomatic arch and the more medial surface of the skull

A

temporal fossa

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3
Q

Boundaries of the temporal fossa

A
  1. superior: superior and inferior temporal lines
  2. anterior: frontal and sygomatic bones
  3. lateral: sygomatic arch
  4. inferior: infratermporal crest
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4
Q

nerves found on the surface of the temporal fossa?

A

CN V- auricolotemporal nerve

CN VII temporal and zygomatic br.

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5
Q

vasculature found in the termporal fossa?

A

superficial temporal artery and vein

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6
Q

borders of the infratemporal fossa

A
  1. superior : greater wing of sphenoid
  2. inferior: medial pterygoid
  3. anterior : maxilla
  4. posterior: tympanic plate, mastoid, styloid processes
  5. lateral: ramus of the mandible
  6. medial: lateral pterygoid plate
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7
Q

infratemporal fossa contains CN

A
  • mandibular br. of V

- chorda tympani

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8
Q

muscles found in the infratermporal fossa

A
  • temporalis muscle

- pterygoid muscles (medial and latera)

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9
Q

what else besides muscle and CN can you find i nthe infraatermporal fossa?

A
  • otic ganglion
  • maxillary arter
  • ptyregoid venous plexus
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10
Q

primary muscles of mastication

A
  • temporalis
  • masseter
  • lateral and medial pterygoid
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11
Q

masseter describe it and its innervation

A

two heads: superficial and deep

innervated by the masseteric br. of CN V3 through the mandibular notch

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12
Q

temporalis describe it and its innervation

A

used for infection tracking

innervation: deep temporal br. of CN V3 the mandibular n

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13
Q

medial pterygoid describe it and its innervation

A

attached to the medial surface of the lateral pterygoid and inserts at the pterygoid tuberosity on mandible

innervated by medial pterygoid br. of the CN V3

innervation

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14
Q

lateral pterygoid it and its innervation

A

attached to the lateral pterygoid on lateral surface and attaches tocondylar process/ tempromandibular joint (it has two heads: a superior head and a inferior)

innervated by the lateral pterygoid br. of CN V3

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15
Q

masticatory muscle sling

A

masseter and medial pterygoid

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16
Q

Maxillary artery arises from the __________ and it is divided into three part ____, _____ and _____

A

arises from external carotid

3 parts: mandibular, pterygoid and pterygopalatine

17
Q

maxillary artery gives of 3 br.

A
  • middle meningeal
  • accessory meningeal
  • inferior alveolar
18
Q

maxillary artery is superficial to ______ in 2/3 of time

A

lateral pterygoid muscle

19
Q

opthalmic arises from

A

internal carotid

20
Q

termination of the maxillary artery

A

sphenopalatine

21
Q

main passive support of the mandible

A

sphenomandibular ligament

22
Q

insertion and attachment of the sphenomandibular lig.

A

spine of the sphenoid to lingula of mandible

23
Q

most common dislocation of jaw

A

anterior