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202: Theme 2, Sensory inputs and motor outputs > Face, temporal and infratemporal fossa > Flashcards

Face, temporal and infratemporal fossa Flashcards

1
Q

Occipitofrontalis

A

Muscle of the face

- Elevates the eyebrows

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2
Q

Orbicularis oris

A

Muscle of the face

- Closes the mouth

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3
Q

Zygomaticus major

A

Muscle of the face that elevates the labial commissure

[corner of the mouth]

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4
Q

Orbicularis oculi

A

Muscle of the face that closes the eyelids.

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5
Q

Platysma

A

Muscle that depresses the mandible against resistance

  • Also tenses the fascia of the neck
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6
Q

Buccinator

A

Muscle of the face

  • Compresses the cheek
  • Keeps bolus in the mouth
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7
Q

Innervation of facial expression muscles

A

Facial nerve [CN 7]

- General motor

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8
Q

Innervation of the face of the skin

A

Trigeminal nerve [CN 5]

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9
Q

Motor branches of the facial nerve [6]

[To Zanzibar, by pink motor car]

A

Posterior auricular

Buccal

Temporal

Zygomatic

Marginal mandibular

Cervical

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10
Q

Arterial supply to the face [4]

A

Branches of the external carotid artery:

  • Lingual
  • Facial
  • Maxillary
  • Superficial temporal
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11
Q

Parasympathetic branches of the facial nerve

A

Branches to pterygopalatine ganglion

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12
Q

Sensory innervation of CN 7

  • Special
  • General
A

Special afferent—> Taste [Anterior 2/3 of tongue]

  • Chorda tympani
  • Lingual nerve carries chorda tympani fibres

General sensory
- Skin over external auditory meatus

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13
Q

Exit of facial nerve

A

Internal acoustic meatus—-> Facial canal—-> Stylomastoid foramen

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14
Q

CN 5

  • Name
  • Branches + their exit
A

Trigeminal nerve

Branches:
- Ophthalmic [V1]—-> Superior orbital fissure

  • Maxillary [V2] —-> Foramen rotundum
  • Mandibular [V3] —-> Foramen ovale
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15
Q

Venous drainage of the face

A

Most of the face:

  • Facial vein—> internal jugular
  • Starts near the eye

Superficial temporal—> External jugular

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16
Q

Muscles of mastication + their innervation

Tara and Mara Massaged Lana

A

Temporalis

Masseter

Medial pterygoid

Lateral pterygoid

All innervated by Mandibular nerve [ CN V3 ]

17
Q

Temporalis

  • Innervation
  • Action
A

Muscle of mastication, supplied by mandibular nerve

Action:
- Elevation and retraction

18
Q

Masseter

  • Innervation
  • Action
A

Muscle of mastication, supplied by mandibular nerve

Action:
- Elevation

19
Q

Medial pterygoid

  • Innervation
  • Action
A

Muscle of mastication, supplied by mandibular nerve

Action:

  • Elevation
  • Side to side
20
Q

Lateral pterygoid

  • Innervation
  • Action
A

Muscle of mastication, supplied by mandibular nerve

Action:

  • Protrusion
  • Depression
21
Q

Temporal fossa

  • Shape
  • Contents
A

Fan shaped fossa at the side of the head [temporal bone]

Contents:

  • Temporalis muscle [mastication]
  • Maxillary nerve branches [CN V2]
22
Q

Infra temporal fossa

- Contents [6]

A

Inferior to the temporal fossa

Medial and lateral pterygoid muscles

Mandibular nerve

Maxillary artery

Facial nerve branches

Glossopharyngeal nerve

Pterygoid plexus of veins

23
Q

Vessels that run through the parotid gland

A

Retromandibular vein

External carotid artery

24
Q

Path of the parotid duct

A

Leaves the gland at the anterior edge—->

Corner of the mouth —->

Buccinator—->

Enters oral cavity at the upper second molar tooth.

25
Q

Ophthalmic nerve

- Type + innervation [5]

A

V1 branch of trigeminal nerve

SENSORY innervation

  • Skin
  • Conjunctiva
  • Front of the head
  • Nose
  • Mucous membrane
26
Q

Parotid gland

A

Superficial to the muscles of the face

Largest of the three salivary glands in the head

Role
- Aids digestion by secreting saliva.

27
Q

Branches of the ophthalmic nerve [3 main]

A

Frontal- Supraorbital + supratrochlear

Lacrimal—> rides with facial nerve to lacrimal gland [parasympathetic]

Nasocillary

  • Anterior and posterior ethmoidal
  • Infra-trochlear
28
Q

Branches of the Maxillary nerve [2 main]

A

Infraorbital

Zygomatic

  • Zygomaticofacial
  • Zygomaticotemporal
29
Q

Sensory branches of the mandibular nerve [4]

A

Auriculotemporal

Buccal

Lingual—-> [Facial nerve to tongue]

Inferior alveolar

30
Q

Motor branches of the mandibular nerve [5]

A

Name after muscles supplied:

  • Mylohyoid
  • Medial and lateral pterygoid
  • Temporalis
  • Masseter
31
Q

Parasympathetic branches of the mandibular nerve [5]

A

Supplies salivary glands

32
Q

Maxillary nerve

  • Type
  • Innervation
A

Sensory nerve

  • Dura
  • Nasal
  • Upper cheek
  • Lip
  • Teeth

Parasympathetic
- Enters pterygopalatine ganglion to give off fibres.

33
Q

Mandibular nerve

  • Type
  • Innervation
A

Type: mixed nerve

Motor
- Muscles of mastication

Sensory

  • Lower face
  • Lip
  • Teeth

Parasympathetic
- Salivary glands

202: Theme 2, Sensory inputs and motor outputs (13 decks)

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