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Anatomy ICOM > Oral And Nasal Cavities > Flashcards

Oral And Nasal Cavities Flashcards

1
Q

Nasal cavity bones

A
  1. Nasal
  2. Maxillary
  3. Lacrimal
  4. Frontal
  5. Ethmoid
  6. Inferior nasal concha
  7. Palatine
  8. Vomer
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2
Q

Sphenoethmoidal recess

A

Above superior concha

1. Receives opening sphenoidal sinus

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3
Q

Superior meatus in nasal cavity

A

Marrow passage between middle and superior conchae

1. Houses posterior ethmoid sinuses

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4
Q

Middle meatus in nasal cavity

A

Communicates w/ frontal and maxillary sinus

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5
Q

Inferior meatus of nasal cavity

A

Lacrimal duct

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6
Q

Nasal cavity innervation

A
  1. CN I
  2. CN V1
    A. Anterior ethmoid: internal, lateral, and medial nasal branches
    B. Posterior ethmoid: sphenoid sinus and ethmoid air cells
    1. Often absent
  3. CN V2
    A. Nasopalatine and posterior nasal branches
  4. Parasympathetic from CN VII via greater petrosal -> pterygopalatine ganglia -> jump onto branches CN V -> nasal mucosa
  5. Sympathetic: superior cervical ganglion w/ blood vessels
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7
Q

Blood supply to nasal cavity

A

Anastomoses

  1. Internal carotid -> ophthalmic -> ant and post ethmoidal -> anterior septal branches
  2. External carotid -> maxillary -> sphenopalatine -> posterior septal branches
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8
Q

Soft palate

A

CN X all musculature except tensor veil palatini (CN V3)

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9
Q

Structures superior to soft palate

A

Nasopharynx and muscles that elevate palate

  1. Torus tubarius
  2. Salpingopharyngeal fold
  3. Tensor veli palatini
  4. Levator veli palatini
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10
Q

Torus tubarius

A

Bulbous cartilaginous opening of auditory tube

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11
Q

Salpingopharyngeal fold

A

Makes up posterior border of auditory tube

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12
Q

Tensor veli palatini

A

Off auditory tube and sphenoid bone -> wraps around pterygoid hamulus -> soft palate

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13
Q

Levator veli palatini

A

Off auditory tube and petrous bone -> uvulas

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14
Q

Structures inferior to soft palate

A

Muscles elevate pharynx and posterior tongue -> soft palate

  1. Uvula
  2. Palatoglossal arch
  3. Palatopharyngeal arch
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15
Q

Uvula

A

Central body and origin palatoglossal and palatopharyngeal arches
1. Contain tonsils

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16
Q

Palatoglossal arch

A

Covers palatoglossus muscle

  1. Prox: uvulae anteriorly
  2. Distal: posterior tongue
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17
Q

Palatopharyngeal arch:

A

Covers palatopharyngeal muscle

  1. Prox: uvula posteriorly
  2. Distal: pharyngeal constrictors
18
Q

Foliage papilla

A

Sensory structures along sides of tongue

19
Q

Fungiform papilla

A

Sensory structures scattered on anterior surface of tongue

1. Resemble mushrooms

20
Q

Filiform papilla

A

Sensory structures on entire surface of tongue

1. Resemble hair

21
Q

Vallate papilla

A

Large round sensory structures surrounded by rings on the tongue
1. Many taste buds

22
Q

Terminal sulcus of tongue

A

Separates tongue from root

23
Q

Muscles of the tongue

A 
1. Intrinsic
  A. Superior and inferior longitudinal m.
  B. Transverse m.
  C. Vertical m.
2. Genioglossus
3. Hypoglossus 
4. Palatoglossus
5. Styloglossus
24
Q

Genioglossus m.

A

Bulk of tongue

  1. Prox: genial tubercle of mandible
  2. Distal: intrinsic dorsum of tongue
25
Q

Hyoglossus m.

A

Hyoid -> tongue

26
Q

Palatoglossus m.

A

Soft palate -> tongue

27
Q

Styloglossus m.

A

Styloid process -> tongue

28
Q

Muscles of mastication

A
  1. Masseter
  2. Temporalis
  3. Lateral pterygoid
  4. Medial pterygoid
  5. Buccal
  6. Orbicularis
  7. Infroatemporal fossa
29
Q

Masseter m.

A
  1. Prox: zygomatic bone
  2. Distal: external mandibular angle
  3. Innervation: CN V
  4. Fxn: close and protrude mandible
30
Q

Temporalis m.

A
  1. Prox: temporal line -> zygomatic arch
  2. Distal: coronoid tuberacle of mandible
  3. Innervation: CN V
  4. Fxn: close and retract mandibles
31
Q

Lateral pterygoid m.

A
  1. Prox: lateral pterygoid plate
  2. Distal: head of condyle and articular disc
  3. Innervation: CN V
  4. Fxn: protrude mandible and articular disc
    A. Unilaterally: moves mandible contralateral side
32
Q

Medial pterygoid m.

A
  1. Prox: medial side lateral pterygoid plate
  2. Distal: medial mandibular angle
  3. Innervation: CN V
  4. Fxn: elevates mandible
    A. Unilaterally: moves mandible contralateral side
33
Q

Infratemporal fossa

A

Area medial mandibular ramus

  1. Lateral and medial pterygoid n.
  2. CN V3: lingual, inferior alveolar, and auriculotemporal branches
  3. Maxillary a. -> inferior alveolar, middle meningeal, and sphenopalatine
  4. Chorda tympani from CN VII
34
Q

Salivary glands

A
  1. Parotid (CN IX)
  2. Submandibular (CN VII) -> sublingual papilla
  3. Sublingual (CN VII) -> opening along sublingual fold
35
Q

Innervation of oral cavity

A
  1. CN V2
  2. CN V3
  3. CN VII
  4. CN IX
  5. CN X
  6. CN XII
36
Q

CN V2 fxn in the oral cavity

A

Sensory nasal cavity and upper palate

  1. Superior alveolar branch: sensory upper teeth and superior alveolar area
  2. Greater palatine, lesser palatine, and nasopalatine: sensory to palate
37
Q

CN V3 fxn in oral cavity

A

Sensory to oral cavity (except upper palate) and motor component
1. Muscle of mastication
2. Tensors
A. Tensor tympani
B. Tensor veli palatini
C. Oral floor: mylohyoid and anterior belly digastric
3. Sensory branches
A. Buccal (long buccal): sensory to cheeks
B. Lingual: sensory anterior 2/3 tongue
C. Inferior alveolar: sensory to teeth and inferior alveolar area -> mental n.

38
Q

CN VII fxn in oral cavity

A
  1. Motor: stylohyoid and posterior belly digrastric
  2. Motor facial expression: buccinator and orbicularis oculi
  3. Chorda tympani: joins lingual
    A. Taste anterior 2/3 tongue and submandibular ganglion -> submandibular and sublingual glands
39
Q

CN IX fxn in oral cavity

A
  1. Parotid via lesser petrosal
  2. Motor stylopharyngeus
  3. Sensory to pharynx
  4. Taste posterior 1/3 tongue
40
Q

CN X fxn in oral cavity

A
  1. Motor pharyngeal constrictors
  2. Motor soft palate m.
    A. Levator veli palatini
    B. Palatoglossus
    C. Palatopharyngeus
    D. Salpingopharyngeus
    E. Muscular uvula
  3. Sensory (taste) epiglottis
41
Q

CN XII fxn in oral cavity

A

Intrinsic and extrinsic tongue muscles

1. Expect palatoglossus

42
Q

Blood supply to the oral cavity

A 
External carotid -> lingual and maxillary branches
1. Lingual -> tongue
2. Maxillary
  A. Middle meningeal 
  B. Inferior alveolar branch -> mandible 
  C. Superior alveolar branch -> maxilla
  D. Descending palatine -> palate
  E. Muscular branches
    1. Buccal
    2. Masseteric 
    3. Pterygoid
    4. Deep temporal

Anatomy ICOM (34 decks)

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