Face and Parotid Gland Flashcards Preview

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Flashcards in Face and Parotid Gland Deck (25):
1

Bones of Anterior Skull

  1. Frontal Bone - forehead & roof of orbit
  2. Maxillae - floor of orbit; surrounds piriform aperture 
  3. Mandible - lower jaw; body & ramus; mental protuberance 
     

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2

Major foramina of facial region and nerves 

  1. Supraorbital notch - supraorbital nerve & vessels
  2. Infraorbital foramen - infraorbital nerve & vessels
  3. Mental foramen - mental nerve & vessels
  4. Stylomastoid foramen  - terminal part of Facial Nerve (CN VII)

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3

Innervation of all muscles of facial expression 

Facial Nerve (CN VII)

4

Which arch do muscles of facial expression develop with 

2nd pharyngeal arch

5

Major Muscles of Facial Expression

  1. Levator labii superioris alaeque nasi
  2. Zygomaticus Major
  3. Orbicularis Oris
  4. Depressor anguli Oris
  5. Buccinator
  6. Orbicularis Oculi
  7. Frontalis
  8. Corrugator supercilii

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6

What pierces Buccinator 

Duct of Parotid gland 

7

Major vascular supply of face

  1. External carotid artery
    1. Facial artery
    2. Superficial temporal artery
      1. Transverse facial 
  2. Internal Carotid artery
    1. opthalmic artery - eye/orbit
      1. joins Supraorbital & Supratrochlear arteries 
  • Anastomose at midline 

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8

Branches of Facial artery 

  1. Inferior Labial 
  2. Superior Labial
  3. Lateral Nasal
  • terminates as Angular Artery towards medial corner of eye

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9

Vein of Face and Communications

Facial Vein

  • No Valves
  • drains into IJV
  • Communicates with
    • Opthalmic vein
    • Infraorbital vein
    • Deep Facial Vein
    • Pterygoid vein
  • All communicate with Intracranial veins 


 

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10

Parotid Gland

  • Largest salivary gland
  • Passes into oral cavity via parotid duct
  • Pierces Buccinator
  • Innervation: Glossopharyngeal Nerve (CN IX)

11

Structures that pass through Parotid Gland

  1. Facial Nerve (CN VII)
  2. Retromandibular Vein 
  3. External Carotid 

12

Branches of Facial Nerve 

  1. Temporal
  2. Zygomatic
  3. Buccal
  4. Mandibular
  5. Cervical
  6. Posterior auricular branch (to occipitalis and auricular muscles)
  • "To Zanzibar By Motor Car" 

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13

Retromandibular Vein Divisions

  1. Anterior Branch 
    1. Joins Facial Vein
  2. Posterior Branch 
    1. joins External Jugular Vein

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14

Branches of External Carotid Artery 

  1. Maxillary artery
  2. Superficial Temporal artery 

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15

Lymph nodes of Head & Neck

  • Superficial Lymph Nodes
    • Occipital Nodes
    • Mastoid Nodes
    • Parotid Nodes
    • Submandibular Nodes
    • Submental Nodes
  • All drain to Deep Cervical Nodes

 

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16

Where do Deep Cervical Nodes drain to 

  • Right Lymphatic Duct (right Side)
  • Thoracic duct (Left side)
  • Drain into Venous Angles

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17

"Special" Cranial Nerves

  • Special Sensory nerves  (Taste, touch, etc)
  • Branchiomotor nerves - assoc. with pharyngeal arches (CN V, VII, IX, X)
  • Cranials w/ parasympathetics - CN III, VII, IX, X

18

Branchiomotor Nerves

  • Nerves associated with Pharyngeal Arches
  • CN V, VII, IX, X

19

Parasympathetic (Visceral Motor) Cranial Nerves 

  • Occulomotor Nerve (CN III)
  • Facial Nerve (CN VII)
  • Glossopharyngeal Nerve (CN IX)
  • Vagus Nerve (CN X) 

20

Pairs of Parasympathetic ganglia in Head

  • Ciliary ganglia
  • Otic ganglia
  • Pterogopalatine ganglia
  • Submandibular ganglia

21

4 Major Functions of Facial Nerve 

  1. Innervation of Facial Expressoin muscles via Branchiomotor Nerves of CN VII
  2. Taste sensaiton from anterior 2/3 tongue via chorda tympani nerve
  3. Parasympathetic innervation of lacrimal/nasal glands via greater petrosal nerve AND sublingual/submandibular gland via chorda tympani nerve
  4. General sensation to ear/canal
     

22

Major sensory nerve of face

Trigeminal Nerve

  • associated with Trigeminal Ganglion in cranial cavity

23

Major Branches of Trigeminal Nerve (CN V)

  1. Opthalmic Branch (V1)
    1. General sensory
  2. Maxillary (V2)
    1. General sensory
  3. Mandibular (V3)
    1. General Sensory
    2. AND 
    3. Branchiomotor 

 

 

24

Trigeminal Dermatomes

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25

Branchiomotor innervations by CN V3

  1. Masseter
  2. Temporalis
  3. Pterygoids
  4. Mylohyoid
  5. Anterior Digastric
  6. Tensor veli Palatini
  7. Tensory tympani