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ANAT 214 > Lab 4: Nasal and Oral Cavities, Mastication > Flashcards

Lab 4: Nasal and Oral Cavities, Mastication Flashcards

1
Q

describe how lacrimal bone contributes to nasal cavity

A

lateral walls
sup/ant

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2
Q

describe how nasal bone contributes to nasal cavity

A

lateral walls
sup/ant

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3
Q

describe how ethmoid bone contributes to nasal cavity

A

roof and medial wall = perpendicular plate
lateral wall = concha

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4
Q

describe how maxilla contributes to nasal cavity

A

floor (hard palate) and lateral walls
anterior

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5
Q

describe how palatine contributes to nasal cavity

A

floor (hard palate) and lateral walls
posterior

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6
Q

describe how sphenoid contributes to nasal cavity

A

roof and posterior lateral walls

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7
Q

describe how vomer contributes to nasal cavity

A

medial wall
roof

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8
Q

what are meatuses

A

spaces underneath

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9
Q

which bones contribute to each conchae

A

superior and middle conchae = ethmoid
inferior concha = maxilla, but inf concha is own bone tho

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10
Q

describe how the pharynx’s are divided

A

nasopharynx –soft palate– oropharnyx –epiglottis– laryngopharnx

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11
Q

describe eustachian tube

A

closed - squished on middle ear side

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12
Q

describe drainage of sinuses

A

lacrimal duct drains into inferior meatus
fontal, maxillary and ethmoid sinuses drain into middle meastus
sphenoidal sinus drains into sphenoethmoidal recess

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13
Q

describe neurovascular supply to nasal cavities - name the nerves/structures

A

maxillary nerve branches = nasal nerves and nasopalatine
sphenopalatine artery = nasal and septal branches
ethmoidal nerves
olfactory nerve

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14
Q

describe neurovascular supply to nasal cavities - maxillary

A

Maxillary (v2) nerve branches
enters via sphenopalatine foramen (next to eustachian tube) and splits =
nasal nerves = lateral walls (lower parts, inf and mid conchae)
nasopalatine nerves - medial and travels to palates via incisive foramen

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15
Q

describe neurovascular supply to nasal cavities - sphenopalatine arteries

A

maxillary artery –> sphenopalatine artery –> nasal (lateral walls) and septal (travels with nasopalatine nerve) branches

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16
Q

describe neurovascular supply to nasal cavities - ethmoidal nerves and arteries

A

ethmoidal nerves (ant portion branch of nasociliary) = from ophthalmic v1
ethmoidal arteries = from ophthalmic aerated (branch ICA)
ethmoidal arteries enter anterior ethmoidal foramen

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17
Q

describe neurovascular supply to nasal cavities - olfactory nerve

A

superior concha
superior aspect
perpendicular plate
medial and lateral
ONLY ETHMOID

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18
Q

describe neurovascular supply to nasal cavities - how we divide nose

A

ant/sup and inf/post

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19
Q

describe neurovascular supply to nasal cavities - how we divide nose = ANT/SUP

A

Innervation = ophthalmic v1 –> nasociliary n –> anterior ethmoid nerve
blood supply =ophthalmic a (ICA) –> ethmoidal arteries (medial and lateral walls)
ENTER via anterior ethmoid foramen

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20
Q

describe neurovascular supply to nasal cavities - how we divide nose = INF/POST

A

Innervation =
maxillary v2 –>
nasopalatine (medial wall) -> palate (through incisive foramen)
nasal nerves (lateral aspect, inf/mid conchae)
blood supply =
maxillary a –> sphenopalatine a –>
nasal branches (lateral aspect w/ nasal nerve)
septal branches (medial wall septum)
ENTERS via sphenopalatine foramen

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21
Q

describe neurovascular supply to nasal cavities - special sensory

A

olfactory –>ethmoid = medial (perpendicular plate) and lateral (sup concha)

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22
Q

what do palatoglossal and palatoopharyngeal arches repesent

A

folds over muscles
covered in mucosa

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23
Q

describe the bones that contribute to the hard palate

A

maxilla and palatine
floor of nasal = roof of oral

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24
Q

identify and describe the foramina of the hard palate

A

greater (front, bigger) and lesser (behind, smaller) palatine foramina
incisive foramen = nasapalatine nerve and sphenopalatine artery enter

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25
name muscles of muscular floor of mouth
mylohyoid geniohyoid
26
describe muscles of muscular floor of mouth - mylohyoid
attachment = hyoid to rim around mandible function = elevate hyoid and oral cavity, depress mandible innervation = mandibular nerve (branch called nerve to mylohyoid)
27
describe muscles of muscular floor of mouth - geniohyoid
attachment = hyoid to mandible (anterior base) function = contracts, elevates, pulls up mandible and tongue (towards mandible) when swallow innervation = C1
28
name extrinsic muscles of tongue
genioglossus palatoglossus hyloglossus styloglossus
29
describe extrinsic muscles of tongue - genioglossus
mandible and hyoid to root of tongue tongue protrusion
30
describe extrinsic muscles of tongue - palatoglossus
soft palate to tongue root elevates tongue and depresses soft palate (closes OI)
31
describe extrinsic muscles of tongue - hyoglossus
hyoid to tongue root bilateral = depression and retraction unilateral = flips tongue
32
describe extrinsic muscles of tongue - styloglossus
styloid process of temporal to tongue root Elevates and retracts tongue
33
name and describe intrinsic muscles of tongue
Longitudinal fibers vertical fibers horizontal/transverse fibers
34
describe extrinsic muscles of tongue - innervations
palatoglossus = VAGUS genio, hyo, stylo glossus= HYPOGLOSSAL
35
describe the relationship of the submandibular gland with the mylohyoid
submand bites mylohyoid
36
where does submandibular gland drain
drains underneath = caruncle
37
where is sublingual gland located
inferior to tongue
38
where does sublingual gland drain
row of openings
39
describe the position and drainage of parotid gland
pierces buccinator anterior to ear overlays masseter
40
describe parasympathetic innervation to 3 major salivary glands
parotid = CN IX = glossopharyngeal submand and subling = CN VII = facial
41
describe neurovascular supply to palates and oral cavity - pathway of greater and lesser palatine nerves and arteries
travel in greater palatine canal (below sphenopalatine foramen) --> nerves descend via foramina (greater and lesser palatine foramina)
42
describe neurovascular supply to palates and oral cavity - pathway of greater and lesser palatine nerves and arteries HOW DO THEY MAKE THEIR WAY INTO ORAL CAVITY
nerves descend via foramina (greater and lesser palatine foramina)
43
describe neurovascular supply to palates and oral cavity - WHERE CAN YOU FIND DESCENDING PALATINE ARTERY
Descending palatine canal terminal branches of maxillary (ECA) splits into greater and lesser palatine arteries
44
describe neurovascular supply to palates and oral cavity - pathway of nasopalatine nerve
enter via sphenopalatine foramen --> medial nasal wall --> EXITS via incisive foramen
45
describe role of lingual nerve and chorda tymapni
sensory innervation to ant 2/3 tongue lingual = v3 = provides GENERAL sensory chorda tympani= provides TASTE (facial nerve)
46
what provides sensory for post 1/3 tongue
CN IX glosspharyngeal
47
describe neurovascular supply to palates and oral cavity - GENERAL pathway
sphenopalatine foramen --> below = greater palatine canal --> greater and lesser palatine nerves and descending palatine a --> enter oral cavity via greater and lesser palatine foramina (as greater and lesser palatine nerves and arteries)
48
describe neurovascular supply to palates and oral cavity - inferior alveolar nerve
through mandibular foramen --branches to mandibular teeth--> exits via mental foramen as mental nerve
49
name muscles of soft palate
levator veli palatini tensor veli palatini palatopharyngeus
50
describe LVP - muscles of soft palate
elevates post soft palate
51
describe TVP - muscles of soft palate
tenses soft palate flattens arch and seals off nasopharynx from oropharynx
52
describe PP - muscles of soft palate
elevates pharynx
53
describe innervation of muscles of soft palate
LVP & PP = vagus TVP = v3 mandibular
54
describe mandible
angle, body, ramus condyle fits mandibular fossa of temporal articular disk = joint articular tubercle - bone goes down depresses mandible = head glides over articular tubercle
55
name muscles of mastication
temporalis masseter medial and lateral pterygoid
56
describe temporalis - muscles of mastication
from temporal fossa to coronoid process elevates at tmj and retracts
57
describe masseter - muscles of mastication
parotid overlays masseter from zygomatic arch to lateral aspect of mandible (ramus and angle) function = elevation and protraction
58
describe MEDIAL pterygoid - muscles of mastication ANATOMY
2 heads = superficial = comes from maxilla and palatine deep = medial surface of lateral pterygoid plate of sphenoid attaches to medial aspect of ramus and mandible (mirror image of masseter)
59
describe MEDIAL pterygoid - muscles of mastication FUNCTION
elevates mandible below lateral - down to mandible
60
describe LATERAL pterygoid - muscles of mastication ANATOMY
2 heads = superior = greater wing sphenoid inferior = lateral aspect of lateral pterygoid plate goes to articular disk in tmj
61
describe LATERAL pterygoid - muscles of mastication FUNCTION
bilateral = mandible protraction, also depression - open unilateral = side to side movement
62
describe innervation of muscles of mastication
all v3 = mandibular nerve deep temporal innervates temporalis masseteric (to masseter)= over mandibular notch lateral and medial pterygoid nerves = to lateral and medial pterygoid muscles
63
Identify teeth - types
incisor canine premolar molar
64
what is tooth formula
I-C-P-M (incisors, canines, premolars, molars) 2-1-2-3 x 4 quadrants = 8x4 teeth = 32
65
describe how frontal contributes to nasal cavity
roof

ANAT 214 (34 decks)

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