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809 - Exam Block 3 > Oral Cavity, Tongue Development, Taste > Flashcards

Oral Cavity, Tongue Development, Taste Flashcards

(94 cards)

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1
Q

the upper and lateral lip lymphatic drainage drains to where

A

submandibular nodes

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2
Q

the medial lower lip lymphatic drainage drains to where

A

submental nodes

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3
Q

Separates oral cavity from nasal cavities and nasopharynx

A

palate

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4
Q

the anterior 2/3rd of the palate is

A

hard

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5
Q

the posterior 1/3 of the palate is

A

soft

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6
Q

Transmits nasopalatine nerves & terminal branches of
sphenopalatine arteries

A

incisive foramen of the hard palate

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7
Q

what travels through the greater palatine foramen

A

greater palatine nerve
greater palatine artery
lesser palatine artery (variable)

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8
Q

what travels through the lesser palatine foramen

A

lesser palatine nerve
lesser palatine artery (variable)

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9
Q

Formed by tendons of tensor veli palatini muscle and strengthened by the palatine aponeurosis

A

soft palate

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10
Q

Space between palatoglossal and palatopharyngeal arches

A

Isthmus of the fauces of the soft palate

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11
Q

Closure of oropharyngeal isthmus brings the _____ and ______ together ; elevation of _______ ; depression of ________

A

tongue and soft palate ; tongue ; soft palate

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12
Q

Closure of oropharynx from nasopharynx results in the elevation of the

A

soft palate

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13
Q

MOTOR

All the muscles of the soft palate are innervated by CN ___ via ________ EXCEPT the tensor veli palatini which is innervated by CN ____

A

X ; pharyngeal plexus ; V3

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14
Q

What has this origin:

pharyngotympanic (auditory) tube and petrous portion of temporal bone

A

Levator veli palatini

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15
Q

What seals off nasopharynx and elevates the soft palate

A

Levator veli palatini

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16
Q

what equalizes air pressure by changing shape of auditory tube

A

Levator and tensor veli palatini

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17
Q

What has this origin:

scaphoid fossa & lateral wall auditory tube

A

tensor veli palatini

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18
Q

What does the following:

Forms palatine aponeurosis

Tenses soft palate

Equalizes air pressure by
opening auditory tube

A

tensor veli palatini

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19
Q

What muscle does the following:

Closes off oral cavity from oropharynx

Elevates posterior tongue

Draws soft palate closer to tongue

A

Palatoglossus muscle

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20
Q

What muscle does the following:

Forms palatopharyngeal
arch

Seals off oropharynx by bringing pharyngeal walls
superiorly, anteriorly, and
medially during swallowing

A

Palatopharyngeus muscle

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21
Q

What muscle does the following:

Closes off nasopharynx

Shortens & elevates uvula

A

Musculus uvulae

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22
Q

Lesion/injury to what causes the following:

Inability to elevate palate or contract musculus uvulae on ipsilateral side

Intact side elevates & pulls the
uvula

A

Injury to pharyngeal branch of
vagus

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23
Q

Sensory innervation of the palate is via CN ____

A

CN V2

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24
Q

What 3 nerves provide sensory innervation to the palate and are branches of CN V2

A

Greater palatine n.

Lesser palatine n.

Nasopalatine n.

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25
PS and S innervation to the palate are via what 2 nerves
nerve of the pterygoid canal made up of the greater petrosal nerve and the deep petrosal nerve
26
the greater petrosal nerve via CN VII carry what fibers
PreGPS and taste
27
the deep petrosal nerve carries what fiber
PostGS
28
arterial blood supply to the palate occurs via what 3 arteries
descending palatine artery greater palatine artery lesser palatine artery
29
Venous Drainage of the palate occurs via
Tributaries of pterygoid venous plexus
30
Remnant of the thyroglossal duct
foramen cecum
31
What vein is visible underneath thin mucosal membrane and involved in the rapid absorption of drugs
deep lingual nerve
32
The extrinsic muscles alter what of the tongue
position
33
The intrinsic muscles alter what of the tongue
shape
34
all muscles of the tongue are innervated by CN ______ EXCEPT the palatoglossus muscle which is innervated by CN ______
XII ; X
35
What are the 4 extrinsic tongue muscles
hyoglossus styloglossus genioglossus palatoglossus
36
what extrinsic muscle originates from lateral portion of body and greater horn of hyoid and inserts into inferolateral aspect of tongue
hyoglossus muscle
37
what extrinsic muscle: depresses the tongue pulls sides inferiorly assists in retrusion
hyoglossus muscle
38
what extrinsic muscle: Originates from styloid process and stylohyoid ligament and inserts into posterolateral tongue; interdigitating with hyoglossus
styloglossus muscle
39
what extrinsic muscle: Curl the sides of the tongue (working with genioglossus to create a trough) Retrusion
styloglossus muscle
40
what extrinsic muscle: originates from superior mental spine (genial tubercle) of mandible and inserts into dorsum of tongue and body of hyoid
genioglossus muscle
41
what extrinsic muscle: BILATERALLY Depresses tongue centrally, creating a trough Posterior portions pull tongue anteriorly (protrusion) Anterior portions retract apex
genioglossus muscle
42
what extrinsic muscle: UNILATERALLY Deviates tongue to contralateral side
genioglossus muscle
43
what extrinsic muscle: is the palate muscle
palatoglossus muscle
44
What are the intrinsic muscles of the tongue
Superior longitudinal Inferior longitudinal Transverse Vertical
45
what kind of tongue development? From proliferation of mesenchyme in the 1st pharyngeal arch
Anterior tongue development
46
what kind of tongue development? Median lingual swelling (tuberculum impar) appears at end of week 4 in the floor of the primordial pharynx just rostral to the foramen cecum = tongue bud
Anterior tongue development
47
what kind of tongue development? 2 lateral lingual swellings develop in each side of the tongue bud
Anterior tongue development
48
what kind of tongue development? The lateral lingual swellings enlarge & merge with each other Overgrow the median lingual swelling (tongue bud) Does not contribute significantly to the adult tongue
Anterior tongue development
49
what kind of tongue development? Merged lateral lingual swellings = anterior 2/3rd of the tongue Marked externally by the midline groove on the dorsum of the tongue Marked internally by the lingual septum
Anterior tongue development
50
what kind of tongue development? Two elevations from pharyngeal arch 2 develop caudal to the foramen cecum = copula
Posterior tongue development
51
what kind of tongue development? An additional area develops caudal to the copula from pharyngeal arches 3 & 4 = hypopharyngeal eminence
Posterior tongue development
52
what kind of tongue development? The hypopharyngeal eminence overgrows the copula & the copula disappears
Posterior tongue development
53
The line of fusion between the anterior & posterior parts of the tongue
terminal sulcus
54
Cranial neural crest invades to give rise to
connective tissue
55
Myoblasts migrate from 2nd-5th occipital myotomes & bring CN _____ with them
XII
56
At birth all of the tongue located in the
oral cavity
57
By age 4 posterior 1/3rd of the tongue has descended forming the anterior border of the
oropharynx
58
Lingual papillae appear toward the end of week
8
59
Filiform papillae appear during weeks ______ and contain nerve endings of the ______ nerve
10-11 ; lingual
60
Taste buds develop during weeks ____ by inductive interaction between the epithelial cells of the tongue & invading gustatory nerve cells from the chorda tympani, CN ____, and CN ____
11-13 ; IX ; X
61
Taste reflex pathways established by weeks _____
26-28
62
Incomplete fusion of the lateral lingual swellings which results in a deep midline groove through the anterior portion of the tongue
Bifid or cleft tongue
63
Regarding innervation of the tongue, what fibers hitch a ride on CN XII to Superior root ansa cervicalis Nerve to thyrohyoid Nerve to geniohyoid
C1 fibers
64
CN XII lesion makes the tongue do what
project to ipsilateral side of lesion and atrophy of ipsilateral side over time
65
the LMNs in the hypoglossal nucleus fibers form CN ____
XII
66
CN XII does what
Ipsilateral projection from nucleus to muscle targets
67
The LMNs in the hypoglossal nucleus are stimulated by _______ only EXCEPT for the _____ pathway
contralateral UMNs ; corticobulbar
68
CN ___ innervates palatoglossus via pharyngeal nerve
CN X
69
regarding innervation of the tongue what nerve is a branch of CN V3 and is involved in general sensation: pain, temperature, touch
lingual nerve
70
what nerve loops under the submandibular duct
lingual nerve
71
regarding innervation of the tongue, what is this: Branch of CN VII Taste from anterior 2/3rd tongue PreGPS to submandibular and sublingual glands
chorda tympani
72
A lesion to what nerve where would cause the following symptoms: IPSILATERAL SIDE: Sensory complications – ant. 2/3rd tongue & floor of the mouth Taste – ant. 2/3rd tongue Dry mouth – patient may not notice difference
Lesion in the oral cavity to the lingual nerve
73
Regarding innervation of the tongue, what nerve does this: General sensation from posterior 1/3rd tongue Taste fibers from posterior 1/3rd tongue
CN IX
74
Regarding innervation of the tongue, what nerve does this: Courses between the palatoglossus and palatopharyngeus muscles traveling with or near styloglossus muscle (within tonsillar fossa)
CN IX
75
Peripheral Target: CN VII via chorda tympani n
anterior 2/3rd tongue
76
Peripheral Target: CN VII via greater petrosal n:
palate
77
Peripheral Target: CN IX (oral branch):
posterior 1/3rd tongue
78
Peripheral Target: CN X (internal laryngeal n):
epiglottis
79
1st order cell bodies location? CN VII:
geniculate ganglion
80
1st order cell bodies location? CN IX:
inferior ganglion of CN IX
81
1st order cell bodies location? CN X:
inferior (nodose) ganglion of CN X
82
What artery supplies root of tongue
dorsal lingual artery
83
what artery supplies body of tongue
deep lingual artery
84
What artery supplies floor of mouth & sublingual gland
deep lingual artery
85
what 2 veins are involved in the venous drainage of the tongue
deep lingual vein dorsal lingual vein
86
Lymphatic drainage: Tip of tongue & frenulum:
Submental nodes
87
Lymphatic drainage: Lateral portions ant 2/3rd:
Submandibular nodes
88
Lymphatic drainage: Medial portion ant 2/3rd:
Inferior deep cervical nodes
89
Lymphatic drainage: Posterior 1/3rd:
Superior deep cervical nodes
90
The mylohyoid muscle is innervated by nerve to ______ via CN ____
mylohyoid ; V3
91
What muscle elevates hyoid, floor of mouth, and tongue during swallowing and speaking
mylohyoid muscle
92
the geniohyoid muscle is innervated by
C1 (nerve to geniohyoid)
93
What muscle pulls hyoid anterosuperiorly, shortens floor of mouth, widens pharynx
geniohyoid muscle
94
What glands are innervated by chorda tympani (CN VII)
submandibular glands sublingual glands

809 - Exam Block 3 (8 decks)

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