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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
first branch off maxillary artery
middle menengeal
26
Inferior Alveolar artery comes off what artery
middle menengeal artery
27
how does the middle meningeal artery enter the skull
foramen spinosum
28
Pterion what artery is just deep to it
middle menengeal artery
29
how does the Maxillary nerve exit the pterygopalatine fossa
infraorbital fissure
30
what nerve is the infraorbital nerve a branch of
infraorbital nerve
31
♣ 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)
Pterygopalatine Ganglion
32
what nerve supplies the lacrimal gland, mucosa of nasal cavity & palate
greater petrosal (branch or facial)
33
Branches of maxillary artery:
1. middle menengeal 2. Sphenopalatine 3. • Descending Palatine: divides into greater & lesser palatine aa 4. infra orbital 5. superior alveolar
34
4 branches of maxillary artery:
1. middle menengeal 2. Sphenopalatine: 3. Descending Palatine 4. Infraorbital 5. Superior Alveolar
35
Fibrous tissue covered with mucous membrane attaching to alveolar processes and teeth
Gingivae
36
how many teeth do we have
32
37
name the teeth and number in each quadrant
2 incisors, 1 canine, 2 premolars, 3 molars
38
Nerves to superior teeth and gingivia
superior alveolar nerves (via infraorbital nerve
39
Mandibular Gingiva
1. Buccal nerve 2. Lingual nerve (Both Branches off mandibular)
40
Mandibular teeth innervation
1. inferior alveolar nerve
41
teeth Blood supply (maxillary, mandibular)
superior alveolar | inferior alveolar
42
portion of the tongue that is in the posterior 1/3, in oropharynx
Root
43
portion of the tong that is anterior 2/3, in oral cavity
body
44
V-shaped groove on dorsal surface, separates body and root tongue Terminal sulcus
Terminal sulcus
45
midline mucosal fold between tongue and floor of oral cavity
Lingual frenulum
46
what tong muscles are fibers responsible for shape and fine movements of the tongue
Intrinsic Muscles
47
Anchor tongue to mandible, hyoid, or styloid process of temporal bone; control position of tongue
Extrinsic Muscles
48
Genioglossus Attachment: Action:
Attachment: mandible Action: protrude tongue (bilateral contraction) deviate tongue to side (unilateral contraction)
49
Styloglossus Attachment: Action:
Attachment: styloid process Action: retrude tongue
50
Hyoglossus Attachment: Action:
Attachment: hyoid Action: depress tongue
51
Palatoglossus Attachment: Action :
Attachment: soft palate | Action : elevate posterior tongue (or depress soft palate)
52
what nerve innervates most tongue muscles
Hypoglossal nerve
53
what nerve innervates palatoglossus
Vagus nerve
54
Somatic sensory (pain, temperature, touch)
Anterior 2/3: Lingual nerve (branch of CN V3) | Posterior 1/3: Glossopharyngeal nerve (CN IX)
55
Special sensory (taste)
Anterior 2/3: Facial nerve (CN VII) via chorda tympani Posterior 1/3: Glossopharyngeal nerve (CN IX) Near epiglottis: Vagus (CN X)
56
Lingual artery is a branch of what artery
external carotid artery
57
located on either side of lingual frenulum • often visible deep to the mucosa • superficial location is exploited in the use of sublingual drug delivery
♣ Deep lingual veins
58
what nerve innervates the o Parotid gland
lesser petrosal branch of glossopharyngeal

Anatomy Unit 4 (9 decks)

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