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Anatomy ICOM > Oral And Nasal Cavities > Flashcards

Oral And Nasal Cavities Flashcards

(42 cards)

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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:

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A

Covers palatopharyngeal muscle

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

Foliage papilla

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A

Sensory structures along sides of tongue

19
Q

Fungiform papilla

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A

Sensory structures scattered on anterior surface of tongue

1. Resemble mushrooms

20
Q

Filiform papilla

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A

Sensory structures on entire surface of tongue

1. Resemble hair

21
Q

Vallate papilla

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A

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

22
Q

Terminal sulcus of tongue

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A

Separates tongue from root

23
Q

Muscles of the tongue

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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.

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A

Bulk of tongue

  1. Prox: genial tubercle of mandible
  2. Distal: intrinsic dorsum of tongue
25
Hyoglossus m.
Hyoid -> tongue
26
Palatoglossus m.
Soft palate -> tongue
27
Styloglossus m.
Styloid process -> tongue
28
Muscles of mastication
1. Masseter 2. Temporalis 3. Lateral pterygoid 4. Medial pterygoid 5. Buccal 6. Orbicularis 7. Infroatemporal fossa
29
Masseter m.
1. Prox: zygomatic bone 2. Distal: external mandibular angle 3. Innervation: CN V 4. Fxn: close and protrude mandible
30
Temporalis m.
1. Prox: temporal line -> zygomatic arch 2. Distal: coronoid tuberacle of mandible 3. Innervation: CN V 4. Fxn: close and retract mandibles
31
Lateral pterygoid m.
1. Prox: lateral pterygoid plate 2. Distal: head of condyle and articular disc 2. Innervation: CN V 3. Fxn: protrude mandible and articular disc A. Unilaterally: moves mandible contralateral side
32
Medial pterygoid m.
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
Infratemporal fossa
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
Salivary glands
1. Parotid (CN IX) 2. Submandibular (CN VII) -> sublingual papilla 3. Sublingual (CN VII) -> opening along sublingual fold
35
Innervation of oral cavity
1. CN V2 2. CN V3 3. CN VII 4. CN IX 5. CN X 6. CN XII
36
CN V2 fxn in the oral cavity
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
CN V3 fxn in oral cavity
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
CN VII fxn in oral cavity
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
CN IX fxn in oral cavity
1. Parotid via lesser petrosal 2. Motor stylopharyngeus 3. Sensory to pharynx 4. Taste posterior 1/3 tongue
40
CN X fxn in oral cavity
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
CN XII fxn in oral cavity
Intrinsic and extrinsic tongue muscles | 1. Expect palatoglossus
42
Blood supply to the oral cavity
``` 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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