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H&N Anatomy Quiz 2 > Regions & Cavities I > Flashcards

Regions & Cavities I Flashcards

1
Q

Shallow depression on the side of the skull

A

Temporal Fossa

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2
Q

Temporal fossa bones:

A

Temporal
Sphenoid
Parietal
Frontal

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3
Q

Temporal fossa communicate with:

A

Infratemporal fossa ONLY

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4
Q

Temporal fossa boundaries:

A

Superior: superior temporal line

Inferior: zygomatic arch

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5
Q

Contents of temporal fossa:

A
  • Pterion
  • Temporalis muscle and fascia
  • Superficial temporal artery
  • Superficial temporal vein
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6
Q

Superficial temporal artery branches off of:

A

External carotid artery

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7
Q

Maxillary artery branches off of:

A

External carotid artery

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8
Q

Superficial temporal + maxillary vein =

A

Retromandibular vein

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9
Q

Anterior branch of retromandibular vein drains into:

A

Internal jugular vein

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10
Q

Posterior branch of retromandibular vein drains into:

A

External jugular vein

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11
Q

These veins drain into internal jugular vein

A

Anteroir branch of retromandibular vein + facial vein = common facial vein -> IJV

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12
Q

These veins drain into external jugular vein

A

Posterior branch of retromandibular vein + posterior auricular vein -> External jugular vein

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13
Q

temporalis muscle is responsible for:

A

Mastication

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14
Q

Infratemporal fossa boundaries:

A

Anterior: Maxilla
Posterior: Mastoid process of temporal bone

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15
Q

Infratemporal fossa communicates with:

A
  • Temporal fossa via gap deep to zygomatic arch
  • Cranial cavity through foramen ovale (V3) and spinosum (meningeal artery)
  • Orbit: Inferior orbital fissure
  • Pterygopalatine fossa: pterygomaxillary fissure
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16
Q

Infratemporal fossa contents:

A
  • Muscles of mastication (lateral and medial pterygoid)
  • Vessels (Maxillary artery and vein, pterygoid venous plexus)
  • Nervous structures (Mandibular nerve V3, chorda tympani, otic ganglion)
  • Deep lobe of parotid gland
  • TMJ
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17
Q

Maxillary artery supplies:

A
  • Nasal cavity
  • Lateral wall and roof of the oral cavity
  • All teeth
  • Most of dura mater (via middle meningeal artery)
  • Infratemporal and pterygopalatine fossae
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18
Q

Maxillary artery is a branch of this artery:

A

External carotid artery

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19
Q

Pterygoid venous plexus receives blood from:

A

All regions that maxillary artery supplies to:

  • Nssal cavity
  • Upper oral cavity
  • All teeth
  • Dura mater
  • Infraorbital and pterygopalatine fossae
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20
Q

Pterygoid vein + ______ + _______ = Retromandibular vein

A

superficial temporal vein, maxillary vein

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21
Q

TMJ fxn:

A
  • Articulation of the mandible with the skull

- Allows movement of mandible

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22
Q

Location of TMJ:

A

Where skull and the mandible articulate, which contains mandibular condyle and zygomatic part of temporal bone.

It is also medial to the parotid gland.

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23
Q

What type of joint is TMJ:

A

Synovial joint with cartilage in between

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24
Q

What type of nerve fibers are found in TMJ?

A

GA from V3.

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25
Q

Muscles of mastication are located:

A

In and around infratemporal fossa

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26
Q

Name the primary muscles of mastication:

A
  • Temporalis
  • Masseter
  • Medial pterygoid
  • Lateral pterygoid
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27
Q

Which two muscles of the mastication elevate, protrude, and move the mandible side to side?

A

Masseter and medial pterygoid

28
Q

This muscle depresses, protrudes, and moves the mandible side to side.

A

Lateral pterygoid

29
Q

How does temporalis muscle help in mastication?

A

It elevates the mandible

30
Q

How to test for the fxn of mandibular nerve (V3)?

A

Ask pt. to clench their jaw.

31
Q

Name the accessory muscles of mastication:

A
  • Anterior belly of digastric
  • Mylohyoid
  • Buccinator
  • Posterior belly of digastric
32
Q

Fxn of anterior belly of digastric:

A

Depression and retrusion of mandible

33
Q

Fxn of Mylohyoid:

A

Degression of the mandible

34
Q

Fxn of muccinator:

A

Tightens cheek while chewing

35
Q

Fxn of posterior belly of digastric:

A

Depresses mandible

36
Q

Which muscles of mastication are innervated by CN VII?

A

Buccinator and posterior belly of digastric

37
Q

Name the muscles of mastication that are innervated by V3:

A
  • Temporalis
  • Masseter
  • Medial pterygoid
  • Lateral pterygoid
  • Anterior belly of digastric
  • Mylohyoid
38
Q

Largest branch of CN V:

A

Mandibular nerve V3

39
Q

Mandibular nerve V3 leave cranial cavity via:

A

foramen ovale

40
Q

State the pathway of mandibular nerve V3 from trigeminal ganglion to infratemporal fossa.

A

Trigeminal ganglion -> foramen ovale -> infratemporal fossa.

41
Q

GE of mandibular nerve V3 innervates:

A
  • primary muscles of mastication
  • anterior belly of digastric
  • mylohyoid
  • suspends parasympathetic ganglion: otic ganglion
42
Q

Parasymathetic otic ganglion is suspended by:

A

Mandibular nerve V3

43
Q

GE/GA fibers of mandibular nerve suspend the otic ganglion. Select one.

A

GE

44
Q

GA fibers of the mandibular nerve V3 innervates:

A
  • Meningeal branch
  • Auriculotermporal nerve
  • Lingual nerve
45
Q

This nerve carries hitchhiking VE fibers of the parotid gland.

A

Auriculotemporal nerve

46
Q

Auriculomandibular nerve receive GA info from:

A

Skin of temple and ear, and TMJ.

47
Q

Lingual nerve, a branch of mandibular nerve suspends this ganglion.

A

Submandibular ganglion

48
Q

This nerve carries hitchhiking VE and SA taste fibers from chorda tympani.

A

Lingual nerve

49
Q

This nerve carries GA from skin of temple and ear and TMJ.

A

Auriculotemporal nerve

50
Q

GA from anteroir 2/3 of tongue and floor of mouth is carried toward CNS via:

A

Lingual nerve

51
Q

Submandibular ganglion is located:

A

in submandibular region

52
Q

Preganglionic parasympathetic fibers of CN _____, join onto chorda tympani, then hitchhike onto _____ in the infratemporal fossa.

A

CN VII, lingual nerve.

53
Q

VE fibers of lingual nerve synapse in _________.

A

submandibular ganglion

54
Q

Postganglionic parasympathetic nerves of the submandibular ganglion travel to ______ and ______ glands via _____ nerve.

A

sublingual, submandibular glands, lingual nerve.

55
Q

Pterygopalatine fossa location:

A
  • Between bones of lateral side of the skull

- Immediately posterior to maxilla

56
Q

Pterygopalatine fossa in deep to this fossa.

A

Infratemporal fossa

57
Q

Walls of the pterigopalatine fossa:

A
  • Anterior: posterior surface of maxilla
  • Posterior: pterygoid process of sphenoid bone
  • Medial: lateral surface of palatine bone
58
Q

Contents of the pterygopalatine fossa:

A
  • Maxillary nerve (V2)
  • Terminal part of maxillary artery
  • Nerve of pterygoid canal
  • Pterygopalatine ganglion
  • Veins and lymphatics
59
Q

How does the pterygopalatine fossa communicate with infratemporal fossa?

A

Via pterygomaxillary fissure

60
Q

How does the pterygopalatine fossa communicate with floor of orbit?

A

Via inferior orbital fissure

61
Q

Name the nerves of the pterygoid canal.

A
  • Greater petrosal nerve (CN VII)

- Deep petrosal nerve (ICA plexus)

62
Q

Preganglionic parasympathetic nerves of the pterygoid canal come from:

A

Greater petrosal nerve

63
Q

ICA plexus of the deep petrosal nerve carry:

A

postganglionic sympathetic nerves

64
Q

Largest of the 4 parasympathetic ganglia in the head:

A

Pterygopalatine ganglion

65
Q

Contents of pterygopalatine ganglion:

A
  • Preganglionic parasympathetic from greater petrosal nerve
  • Postganglionic sympathetic from ICA plexus
  • Sensory branches of V2

H&N Anatomy Quiz 2 (7 decks)

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