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Anatomy 6513 UNIT 2 > Oral Cavity > Flashcards

Oral Cavity Flashcards

(83 cards)

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1
Q

What are the 2 main regions of the oral cavity?

A

oral vestibule

oral cavity proper

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2
Q

What are the limits of the oral vestibule?

A

between the buccal surface and the teeth

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3
Q

What are the limits of the oral cavity proper?

A

between the teeth
palate = superior extent
includes tongue and sublingual areas

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4
Q

__ palate = 2/3 anterior

__ palate = 1/3 posterior

A

hard palate = 2/3 anterior

soft palate = 1/3 posterior

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5
Q

What are the 2 major folds in the soft palate?

A 
pallatoglossus m (anterior)
pallatopharygeal m (posterior)
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6
Q

_____ arch is the posterior extent of the oral cavity

A

pallatoglossal fold

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7
Q

Name the 5 muscles found in the pallatal region

A 
pallatoglossus m
pallatopharyngeus m
uvular m
tensor veli palatini m
levator veli palatini
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8
Q

Where is the uvular muscle found

A

underneath mucosa on the uvula

pretty much the only thing in this area

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9
Q

__ veli palatini is more lateral than __ veli palatini

A

tensor veli palatini is more lateral than levator veli palatini

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10
Q

tensor veli palatini is more lateral than levator veli palatini in referenc eto ____

A

medial pterygoid plate

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11
Q

What happens when tensor veli palatini contracts?

A

tenses soft palate

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12
Q

What happens when levator veli palatini contracts?

A

elevates soft pallate for swallowing

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13
Q

What is the main aponeurosis found in the soft palate?

A

palatine aponeurosis

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14
Q

Palatine aponeurosis is the aponeurosis between ___

A

tensor veli palatini aponeurosis

and pallatoglossus aponeurosis

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15
Q

What is the 3 main arterial supplies to the palate?

A
  1. descending palatine artery (goes through palatine canal)
    splits into greater palatine artery and lesser palatine artery
  2. ascending palatine artery (branch off facial artery)
  3. palatine artery (branch off of ascending pharyngeal artery from ECA)
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16
Q

Ascending palatine artery is a branch off ___

A

facial artery

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17
Q

Palatine artery is a branch off ___

A

ascending pharyngeal artery (first posterior branch off of ECA)

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18
Q

What is the venous drainage of the palate?

A

pterygoid plexus

pharyngeal plexus

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19
Q

What is general sensory innervation to the palate?

A
  1. nasopalatine nerve (through incisive)
  2. greater palatine nerve
  3. lesser palatine nerve
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20
Q

What anastomoses with each other in general sensory to the palate?

A

nasopalatine nerve anastomoses with greater and lesser palatine nerves

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21
Q

Pre-ganglionic sympathetic innervation to the palate comes from _____

A

TI lateral horn through sympathetic trunk

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22
Q

Pre-ganglionic sympathetic innervation to the palate synapses in ____

A

superior cervical ganglion

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23
Q

Post-ganglionic sympathetic innervation to the palate is ____

A

deep petrosal nerve (into pterygoid canal)

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24
Q

Pre-ganglionic parasympathetic innervation to the palate is ____

A

greater petrosal nerve

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25
Pre-ganglionic parasympathetic greater petrosal nerve joins with ______,
deep petrosal nerve (post-ganglionic sympathetic fibers)
26
when pre-ganglionic parasympathetic greater petrosal nerve joins with post-ganglioc sympathetic deep petrosal nerve, this forms _____
vidian nerve of pterygoid canal
27
The pre-ganglionic parasympathetic fibers going to the palate synapse in ____
pterygopalatine ganglion
28
How do autonomics get to the palate?
run on sensory innervation pathways
29
What are the 2 main motor nerves for the palate?
1. mandibular (CN V3) | 2. Vagus Nerve
30
CN V3 mandibular nerve innervates ___ muscles of the palate
tensor veli palatini | remmeber: CN V3 does MOM and tensors
31
Vagus nerve innervates ___ muscles of the palate
``` levator veli palatini m pallatoglossus m pallatopharyngeus m muscular uvulae m salpingopharyngeus m ```
32
The pallatine tonsils receive arterial supply from tonsilar branches of what 4 arteries?
Tonsilar branches from... 1. palatine artery 2. ascending palatine artery 3. facial artery 4. dorsal lingual artery
33
In a tonsilectomy, heavy bleeding can result because of ___ or ___
heavy bleeding from arteries heavy bleeding from PARATONSILAR VEINS
34
What are the paratonsilar veins
venous drainage from the tonsilar bed region
35
Why are paratonsilar veins important in a tonsilectomy?
If severed, can result in heavy bleeding | along with heavy bleeding from arteries in tonsilectomY
36
What is the main concern when performing a tonsilectomy?
cutting the CN 9 (glossopharyngeal nerve)
37
Why is the glossopharyngeal so susceptible to injury during a tonsilectomy?
because CN 9 is on the lateral wall of the pharynx lateral wall of pharynx = thin. easy to cut accidentally
38
Lingual nerve is a branch off of ____
CN V3, comes through ovale
39
Lingual nerve emerges in between ____ and ___
medial and lateral pterygoid muscles
40
Submandibular ganglion are at the level of ____
third molars
41
Submandibular ganglion are suspended from ___ nerve via ___
suspended from lingual nerve via 2+ short nerve branches
42
Submandibular ganglion receives pre-ganglionic ___ fibers from where?
pre-ganglionic parasympathetic fibers from chorda tympani
43
Submandibular ganglion receives post-ganglionic ___ fibers from where?
post ganglionic sympathetic fibers from extenral carotid plexus
44
Both parasympathetic and sympathetic fibers from the submandibular ganglion are going to supply ____
sublingual and submandibular glands
45
Hypoglossal nerve (CN 12) can be found deep to __ muscles
posterior belly of digastric muscle and stylohyoid muscle
46
___ nerve can be found deep to posterior belly of digastric muscle and stylohyoid muscle
hypoglossal nerve
47
Hypoglossal nerve runs anterior between ___ and ___
submandibular gland and hypoglossus muscle
48
Hypoglossal nerve runs inferior to ___ nerve
lingual
49
Hypoglossal nerve runs superior to __ muscle
mylohyoid muscle
50
Hypoglossal nerve ends in __ tongue to do __ innervation
posterior tongue | motor innervation
51
Glossopharyngeal nerve runs lateral to ____
stylopharyngeus muscle to enter pharynx
52
Glossopharyngeal nerve runs between __ and __ muscle
superior and middle constrictor muscle
53
Glossopharyngeal ends in __ tongue to do __ innervation
posterior tongue | sensory innervation
54
Name the 5 muscles of the tongue
``` pallatoglossus m styloglossus m hyoglossus m genioglossus m intrinsict m ```
55
Palatoglossus muscle is the __ arch
1st
56
Stylogossus muscle runs from __ to tongue
styloid process
57
Hyoglossus muscle runs from __ to tongue
hyoid bone
58
__ tongue muscle is rectangular in shape
hyoglossus m
59
Genioglossus muscle runs from __ to tongue
genoid tubercle of mandible
60
What are the types of intrinsict muscles of the tongue?
vertical, transverse, long
61
____ is a paired muscle fused at the midline, working to protrude the tongue
genioglossus m
62
What are the two types of paralysis for genioglossus m
unilateral paralysis and bilateral paralysis of CN 12
63
CN 12 affects ___ (movement) of genioglossus m
straight protrusion of genioglossus
64
Describe the symptons of unilateral paralysis of CN 12 on genioglossus m
intact side of tongue protrudes more than affected side results in deviation of tongue towards paralyzed side
65
Describe the symptoms of bilateral paralysis of CN 12 on genioglossus m
inability to protrude tongue (tongue falls back and may occlude airway = suffocation)
66
What is the CN exam to test for CN 12 unilateral/bilateral paralysis?
Tell patient "stick out your tongue"
67
What are the 2 main arteries for oral cavity?
1. facial artery | 2. lingual artery
68
What does facial artery supply in oral cavity
supplies most of hte superficial structures
69
Facial artery's supply to the oral cavity overlas with the ___ branches of ____
buccal branches of maxillary artery
70
Lingual artery to the oral cavity has 3 branches. What are tehy?
dorsal lingual artery deep lingual artery sublingual artery
71
What is the venous drainage of the oral cavity?
accompanying veins (2:1 ratio) to arteries.
72
Venous draingae from the oral cavity drains into ___
IJV
73
What provides general/special sensory for the anterior 2/3 of tongue?
``` chorda tympani (CN 7) - special sensory Lingual nerve(CN V2) - general sensory ```
74
What provides general/special sensory for the posterior 1/3 of the tongue?
CN 9: glossopharyngeal nerve
75
What provides general/special sensory for the epiglottis?
CN 10 vagus
76
Anterior superior alveolar nerve is a branch off of ____ What does it supply?
Branch of infra-orbital nerve (CN V2) Supplies anterior maxillary teeth
77
Middle superior alveolar nerve is a branch off of ___ What does it supply
Branch off of infra-orbital nerve (CN V2) supplies maxillary premolars
78
Posterior superior alveolar nerve is a branch off of ___ What does it supply?
branch off of maxillary nerve (CN V2) supplies maxillary bolars
79
Inferior alveolar nerve is a branch off of ___ What does it supply?
branch off of mandibular nerve (CN V3) supplies mandibular teeth through mental foramen becomes mental nerve and incisive nerve
80
ASA artery is a branch off of ____
infraorbital artery
81
MSA artery is a branch off of ___
infraorbital artery
82
PSA artery is a branch off of ____
maxillary artery
83
Inferior Alveolar artery is a branch off of ___
maxillary artery

Anatomy 6513 UNIT 2 (14 decks)

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