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Anatomy Unit 4 > Oral Region > Flashcards

Oral Region Flashcards

1
Q

Bounded superiorly by the temporal line, the Temporal Region includes the (1) and (2),

A
  1. temporal fossae

2. infratemporal fossae

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2
Q

The temporal fossae and infratemporal fossae are separated by the

A

zygomatic arch

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3
Q

♣ (1) of the mandible articulates with the (2) and the articular tubercle of the temporal bone

A
  1. Mandibular condyle

2. mandibular fossa

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4
Q

what type of joint is the TMJ

A

Synovial joint

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5
Q

5 movements at the TMJ

A 
depression 
elevation 
protrution 
retrution 
lateral
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6
Q

Dislocation of the TMJ usually occurs (1), when the mandibular condyle displaces anterior to the articular tubercle.

A

anteriorly

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7
Q

what percentage of people are effected by the TMJ

A

5-12%

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8
Q

Muscles of mastication are innervated by what nerve

A

Mandibular nerve of trigeminal

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9
Q

Temporalis

  1. Insertion
  2. Action
A
  1. Insertion: coronoid process of mandible

2. elevate and retrude mandible

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10
Q

Masseter
• Origin:
• Insertion:
• Action:

A

Origin: zygomatic arch
Insertion: lateral aspect of ramus of mandible
Action: elevate mandible

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11
Q

Lateral pterygoid (two heads)
• Origin:
• Insertion:
• Action:

A

Origin: sphenoid
Insertion: mandibular condyle, joint capsule of TMJ
Action: protrude mandible (with bilateral contraction)
-lateral (side-to-side) movements of mandible (with unilateral
contraction)

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12
Q

Medial pterygoid (two heads)
Origin:
Insertion:
Action:

A

Origin: sphenoid
Insertion: medial aspect of ramus of mandible
Action: elevate and protrude mandible (with bilateral contraction)
lateral (side-to-side) movements of mandible (with unilateral
contraction)

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13
Q

5 branches of mandibular nerve

A
  1. Buccal
  2. lingual
  3. auriculotemportal
  4. inferior alveolar
  5. mental
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14
Q

Mantibular nerve exits skull via

A

foramen ovale

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15
Q

o Sensory to cheek and mandibular gingivae (gums)

A

Buccal nerve

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16
Q

Sensory to

  1. mandibular gingivae,
  2. floor of mouth,
  3. anterior 2/3 of tongue
A

• Lingual nerve

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17
Q

Sensory to ear region

A

• Auriculotemporal nerve

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18
Q

nerve to mylohyoid innervates

A

Mylohypod, anterior belley of digastric

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19
Q

• Inferior alveolar nerve first enters

A

mandibular foramen

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20
Q

o Chorda tympani is a branch of what nerve

A

facial

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21
Q

what does tatse to the anterior 2/3 of tongue

A

o Chorda tympani

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22
Q

what does Parasympathetic innervation to submandibular and sublingual salivary glands

A

Chorda tympani

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23
Q

Chorda tympani runs along with what nerve

A

lingual

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24
Q

Maxillary artery is a branch of what artery

A

external carotid

25
Q

first branch off maxillary artery

A

middle menengeal

26
Q

Inferior Alveolar artery comes off what artery

A

middle menengeal artery

27
Q

how does the middle meningeal artery enter the skull

A

foramen spinosum

28
Q

Pterion what artery is just deep to it

A

middle menengeal artery

29
Q

how does the Maxillary nerve exit the pterygopalatine fossa

A

infraorbital fissure

30
Q

what nerve is the infraorbital nerve a branch of

A

infraorbital nerve

31
Q

♣ receives preganglionic parasympathetic fibers from facial nerve (CN VII) (via greater petrosal nerve; see Nasal Region)
• supplies the lacrimal gland, mucosa of nasal cavity & palate (what structure)

A

Pterygopalatine Ganglion

32
Q

what nerve supplies the lacrimal gland, mucosa of nasal cavity & palate

A

greater petrosal (branch or facial)

33
Q

Branches of maxillary artery:

A
  1. middle menengeal
  2. Sphenopalatine
  3. • Descending Palatine: divides into greater & lesser palatine aa
  4. infra orbital
  5. superior alveolar
34
Q

4 branches of maxillary artery:

A
  1. middle menengeal
  2. Sphenopalatine:
  3. Descending Palatine
  4. Infraorbital
  5. Superior Alveolar
35
Q

Fibrous tissue covered with mucous membrane attaching to alveolar processes and teeth

A

Gingivae

36
Q

how many teeth do we have

A

32

37
Q

name the teeth and number in each quadrant

A

2 incisors,
1 canine,
2 premolars,
3 molars

38
Q

Nerves to superior teeth and gingivia

A

superior alveolar nerves (via infraorbital nerve

39
Q

Mandibular Gingiva

A
  1. Buccal nerve
  2. Lingual nerve
    (Both Branches off mandibular)
40
Q

Mandibular teeth innervation

A
  1. inferior alveolar nerve
41
Q

teeth Blood supply (maxillary, mandibular)

A

superior alveolar

inferior alveolar

42
Q

portion of the tongue that is in the posterior 1/3, in oropharynx

A

Root

43
Q

portion of the tong that is anterior 2/3, in oral cavity

A

body

44
Q

V-shaped groove on dorsal surface, separates body and root tongue Terminal sulcus

A

Terminal sulcus

45
Q

midline mucosal fold between tongue and floor of oral cavity

A

Lingual frenulum

46
Q

what tong muscles are fibers responsible for shape and fine movements of the tongue

A

Intrinsic Muscles

47
Q

Anchor tongue to mandible, hyoid, or styloid process of temporal bone; control position of tongue

A

Extrinsic Muscles

48
Q

Genioglossus
Attachment:
Action:

A

Attachment: mandible
Action: protrude tongue (bilateral contraction)
deviate tongue to side (unilateral contraction)

49
Q

Styloglossus
Attachment:
Action:

A

Attachment: styloid process
Action: retrude tongue

50
Q

Hyoglossus
Attachment:
Action:

A

Attachment: hyoid
Action: depress tongue

51
Q

Palatoglossus
Attachment:
Action:

A

Attachment: soft palate

Action: elevate posterior tongue (or depress soft palate)

52
Q

what nerve innervates most tongue muscles

A

Hypoglossal nerve

53
Q

what nerve innervates palatoglossus

A

Vagus nerve

54
Q

Somatic sensory (pain, temperature, touch)

A

Anterior 2/3: Lingual nerve (branch of CN V3)

Posterior 1/3: Glossopharyngeal nerve (CN IX)

55
Q

Special sensory (taste)

A

Anterior 2/3: Facial nerve (CN VII) via chorda tympani
Posterior 1/3: Glossopharyngeal nerve (CN IX)
Near epiglottis: Vagus (CN X)

56
Q

Lingual artery is a branch of what artery

A

external carotid artery

57
Q

located on either side of lingual frenulum
• often visible deep to the mucosa
• superficial location is exploited in the use of sublingual drug delivery

A

♣ Deep lingual veins

58
Q

what nerve innervates the o Parotid gland

A

lesser petrosal branch of glossopharyngeal

Anatomy Unit 4 (9 decks)

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