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Head and Neck > Oral Cavity and Larynx > Flashcards

Oral Cavity and Larynx Flashcards

1
Q

what is the principal muscle of lips? cheeks?

A

orbiculrais oris

buccinator

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2
Q

cheek: go from superficial -> deep

what innervates cheek

A

skin, buccinator, buccal gingivae, oral mucosa

V3 buccal branch

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3
Q

where do you find the parotid papillae

A

upper 2nd molar

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4
Q

what innervates hard palate ginigva? teeth?

A

gingiva: anterior (incisors + canine), middle (premolar), posterior (molar) superior alveolar. (incisors + canines + premolar also has infrorbital)
teeth: ant/mid/post superior alveolar (off infraorbital/PPG of V2)

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5
Q

which lingual papillae are present, what do they contain?

A

fungiform (most antr), vallate (most postr), foliate paipllae (lateral?) -> taste buds
filiform (middle) -> sensory n endings sensitive to touch

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6
Q

what supplies SA from antr 2/3 tongue?

A

lingual branch of V3

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7
Q

how is taste conveyed from antr 2/3 tongue?

A

chorda tympani of CN7 (first goes through lingual)

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8
Q

what supplies SA from postr 1/3 tongue supplied?

A

by CNIX, lingual branch

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9
Q

how is taste conveyed from post 1/3 tongue?

A

by CNIX, lingual branch

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10
Q

what supplies SA from epiglottis?

A

its actually VA. CNX (internal laryngeal)

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11
Q

how is taste conveyed from epiglottis?

A

CNX (internal laryngeal)

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12
Q

intrinsic tongue muscles alter its __ ? extrinsic muscles alter its __ ? list all

A

shape, position

intrinsic: supr/infr longitudinal + vertical + transverse
extrinsic: genioglossus + palatoglossus + styloglossus + hyoglossus

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13
Q

floor of oral cavity proper contains

A

6: submand/sublingual gland, lingual n, mylophyoid, geniohyoid, lower alveolar arch

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14
Q

what connects tongue to floor of mouth? what is opening of subman ducts? what is elevation of mucosa from lingual gland? how many sublingual ducts? underlying vessels called?

A 
lingual frenulum
sublingual caruncle
sublingual fold
8-20
deep lingual a/v
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15
Q

what innervates oral cavity floor gingiva and teeth?

A

gingiva: buccal branch (V3), mental branch (V3)
floor of mouth: lingual
premolar + molar: infr alveolar dental branches
incisors + canine: incisive branch of infr alveolar

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16
Q

what are 2 suprahyoid muscles that form floor of oral cavity proper? innervation?

A

geniohyoid (C1 via CNXII)

myohyoid (myohyoid off infr alveolar)

17
Q

vertebral levels of larynx

A

C3 - C6

18
Q

define 1) supraglottic space 2) ventricle 3) infraglottic space. what is space b/t true VC called? what if it includes the true VCs

A

1) laryngeal inlet -> vestibular folds (fake VC)
2) b/t vesitbular folds and vocal cords (true VC)
3) from vocal folds -> lower border of cricoid cartilage

rima glottis
glottis

19
Q

what are the 3 single vs 3 paired cartilages

what are the 3 membranes, which one** does internal laryngeal pierce through?

A

single: thyroid, cricoid, epiglottic
paired: arytenoid, corniculate, cuneiform
**thyrohyoid membrane (b/t thyroid cartilage + hyoid bone)
cricothyroid membrane (b/t cricoid + thyroid cartilages)
quadrangular (b/t epiglottic + arytenoid cartilages)

20
Q

conus elastus is made up of

A

medial cricothroid ligament
lateral cricothyroid ligament
vocal ligaments

21
Q

what adducts vocal ligaments, innervation?

A

lateral cricoarytenoid + transverse + oblique arytenoid (BM from recurrent laryngeal)

22
Q

what relaxes the vocal ligaments? innervation?

A

vocalis and thyroarytenoid (BM from recurrent laryngeal)

23
Q

what increases tension of vocal ligaments

A

cricothyroid (BM from EXTERNAL branch of supr laryngeal)

24
Q

superior vs inferior laryngeal art/v branch/tributary of what? which nerves do they pair up with? what are the funct components? what is the dividing line?

A

supr vs infr thyroid art/vein

supr laryngeal art (sympost) pairs w internal pharyngeal n (pierces thryohyoid membrane); VEparapre VA SS of ant epiglottis

infr laryngeal art (sympost) pairs w recurrent laryngeal n; VEparare VA BM SA.

above v below vocal cords

25
Q

intrinsic tongues inn + funct?

A

supr longitudinal: curls tongue longitudially upward, elevate apex and sides, shortens (retrudes) tongue
infr longitudinal: curls tongue longitudially down, depress apex, retrudes tongue
vertical: flattens tongue
transverse: narrows/elongates (protudes) tongue

all CNXII

26
Q

genioglossus inn and function

A

CNXII

protrudes/bilaterally depress/unilaterally wags tongue

27
Q

1) styoglossus and 2) hyoglossus inn and function

A

CNXII

1) retract and elevate
2) retract and depress

28
Q

geniohyoid and mylohyoid inn and function

A 
C1 via CNXII
myohyoid n (from V3)

pulls hyoid anterosuperiorly, shortens floor of mouth, WIDENS PHARYNX

elevate hyoid bone, floor of mouth and tongue during speech + swallow

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