Oral and Nasal Cavities, Sinuses and Pterygopalatine Fossa Flashcards Preview

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Flashcards in Oral and Nasal Cavities, Sinuses and Pterygopalatine Fossa Deck (101):
1

_____ extends from the lateral corner of the nose to the angle of the mouth

nasolabial sulcus

2

shallow midline sulcus between the nose and the upper lip

philtrum

3

red portion of the lips

red margin

4

red margin is due to

thin epithelium and extensive underlying capillary network

5

parotid duct pierces

the buccinator muscle

6

buccinator is innervated by

facial nerve

7

The ______ nerve spirals around the submandibular duct from ______ to ______ medial

lingual
superior-lateral
inferior-medial

Therefore in the dissection of the floor of the mouth, the duct will be above the nerve, and the sublingual gland will be later

8

Wharton's duct aka

submandibular duct

9

muscles of the floor of the mouth (2)

mylohyoid - platform of the tongue
geniohyoid

10

blood supply of sublingual gland

sublingual branch of lingual artery

11

if mylohyoid is paralyzed on one side

scaffold of the mouth sags, and fluid starts to pool on that side of the mouth

12

Parasympathetic innervation to sublingual gland (preganglionic)

preganglionic from superior salivatory nucleus
exit brainstem with facial nerve
travel through chorda tympani
join with lingual nerve
terminate in the submandibular ganglion

13

Parasympathetic innervation to sublingual gland
(postganglionic)

from submandibular ganglion
distribute as numerous short branches to the parenchyma of gland

14

Sympathetic innervation to sublingual gland

post gangilionic fibers originate in superior cervical ganglion
course in external carotid and facial peruses (in adventitia)
some fibers may reach the gland via the sublingual plexus, which courses in adventitia of sublingual branch of lingual artery

15

what kind of structure is the tongue

mobile, musculofibrous

16

tongue plays a role in

mastication deglutition, speech, and taste

17

epithelium on anterior 2/3 innervated by
GSA
SVA

Trigeminal (pain, Temp, touch)
Facial (taste)

18

epithelium on the posterior 1/3 of tongue innervated by
GVA
SVA

glossopharyngeal for both

19

intrinsic mucles of tongue are derived from
innervated by GSE fibers from

head myotomes
hypoglossal nerve

20

facial nerve comes from what arches
innervates what

second arch
anterior 2/3 of tongue
m. of facial expression

21

place of invagination of the thyroid gland

foramen cecum

22

demarcation of ant 2/3 of tongue from posterior 1/3

sulcus terminalis. demarcated by circumvallate papillae

23

beginning of the endoderm

where buccopharyngeal membrane dissolves in the stomodeum. that sulcus limitans is the beginning of the endoderm --> GVA fibers.

24

Oral portion of the tongue embryologic origin (ant 2/3)

ectoderm
GSA from lingual nerve
SVA from facial nerve via chorda tympani to lingual

25

pharyngeal portion of tongue embryologic origin (post 1/3)

endoderm
GVA and SVA from glossopharyngeal nerve

26

structure located on the dorsum of the posterior 1/3 of tongue

lingual tonsil

27

All of the intrinsic mm of the tongue except _______ are innervated by______

palatoglossus
hypoglossal nerve

28

what innervates palatoglossus

vagus nerve

29

disarthria

can't manipulate the tongue to form certain sounds

30

unilateral hypoglossal palsy results in

atrophy and fasciculations of intrinsic muscles of the tongue
paralysis of the tongue
tongue deviates TOWARDS the affected side

31

bilateral paralysis of the tongue may cause

airway obstruction, dysarthria and dysphagia

32

Blood supply of tongue

lingual artery and its terminal branch the profunda lingual a

33

terminal branch of lingual a

profunda lingual a

34

lingual vein drains into

IJV or facial vein

35

lymphatics of tongue drain

deep cervical lymph nodes
jugulo digastric
jugulo omohyoid

36

During swallowing, how do we prevent reflux of material into the nasopharinx

the soft palate closes the pharyngeal isthmus during degluttation

37

Ventilation is a _____ pressure event.

positive pressure - there is nothing physiologic about that
success in extubation is only ~60%. many must be reuntubated

probably due to shutting off the herring brewer reflex in intubation

38

Herring-Brewer Reflex

during inhalation there is some point that the respiratory receptors trigger exhalation
inhilation is a negative function
fact that you suppress a physiologic reflex during inhalation is probably what gives us problems with extubation

39

function of tensor veli palatine muscle
innervation of tensor veli

tenses the soft palate, opens up the auditory auditory tube
small branch of mandibular nerve (V3)

40

auditory tube is ____ during swallowing

closed

41

Function and innervation of levitator veli palatini muscle

elevator of the soft palate (has to be elevated during 2nd and 3rd phase of swallowing, or you will have to snort food out your nose. if you have to do that, ahwat will happen> you will elicit a laryngeal expiatory cough reflex)
innervated by VAGUS

42

heard palate vessels and nerves

greater palatine vessels and nerves

43

soft palate vessels and nerves

lesser palatine vessels and nerves

44

what structure is closely related to the floor of the palatine tonsilar fossa>

glossopharyngeal nerve

45

where do fractures of the nose frequently occur

at the junction between the septal cartilage and ethmoid and vomer bones

46

bony portion of nose

nasal, maxillae, and frontal bones (upper portion of the nose)

47

Cartlagenous portion of nose

septal and alar cartilages

48

Nasal septum

septal cartilage and perpendicular plate of ehtmoid - vomer

49

frequent area of nose bleeds

Kesselbeck's area.
nasal bleeds more posterior can produce a lot of blood, it can be hard to get those to stop bleeding.

50

anterior portion of the nasal cavity lined with hairs

vestibule

51

portion of nasal cavity located above vestibule and is smooth walled

atrium

52

region of nasal cavity covered by tightly adherent mucoperiosteum and mucoperichondrium

repiratory region.

53

curve shaped structures in the nasal cavity with extensive venous plexus

conchae

54

swell bodies are found in the lamina propria of which conchae

middle and inferior

55

drainage from ant 1/3 of nose is _____ from posterior 2/3 is

passive
active

56

nasal congestion

venous sinuses (sell bodies) become dilated and engorged with blood during a cold - thereby swelling the conchae and obliterating the airflow through the meatuses.

57

superior and middle conchae are part of what bone

ethmoid

58

olfactory region is located where in nasal cavity

roof

59

The nasolacrimal opening is located

1cm posterior to the anterior part of the inferior nasal concha

60

Why does your nose run when you cruy

nasolacrimal opening is in the nose, 1cm post to the anterior part of the inferior nasal concha - there is no active absorption here

61

ethmoidal bulla (located on the middle concha) contains (3)

1. opening for maxillary sinus
2. ethmoidal infundibulum (opeinging for frontal sinus0
3. frontal recess (separate opening for frontal sinus)

62

maxillary sinus sinus drains

toward the opening in the nasal cavity ethmoidal bulla
infection --> mucous drains onto superior aspect of the roof of the inferior choncha

63

what a supplies the septum and lateral wall of the poster 2/3 of the nasal cavity

sphenopalatine artery

64

sphenopalatine artery branches into

posterior lateral a
posterior septal a

65

anterior 1/3 of the nasal walls and septum is supplied by

branched of the anterior and posterior ethmoidal arteries, which are branches of the ophthalmic artery

66

kiesselbach;s area (where most epistaxis occurs) is the junction of what arteries

septal branches of superior labial and sphenopalatine arteries

67

lymphatic drainage of nasal cavity

jugulodigastric nodes.

68

blood to post 2/3 nasal cavity
blood to ant 1/3 nasal cavity

branches of sphenopalatine a
anterior ethmoidal a

69

Innervation of
postior 2/3 nasal cavity
anterior 1/3
and also

branches of sphenopalatine ganglion
anterior ethmoidal nerve
olfactory nerve

70

GSA - nasal cavity

Anterior ethmoidal

71

SVA -nasal cavity

olfactory nerves

72

GVA - nasal cavity

branches of sphenopalatine ganglion

73

unilateral paralysis of the tensor or levator veil palatine results in

deviation of the uvula towards the NORMAL side

74

The floor of the orbit is related to what sinus? what can happen in a blowout fx

maxillary sinus
contents of orbit can herniate into maxillary sinus in a blower fx

75

The contents of the orbit are packaged into______ and that is packed into the _______.

periorbital osteum
orbital fossa

76

the orbit has a close relationship with

sinuses and brain
cavernous sinus*

77

Maxillary sinus base -

directly medially

78

maxillary sunus apex -

directed towards the zygomatic process of maxlla

79

maxillary sinus medial wall forms the

lateral wall of nasal cavity

80

maxillary sinus roof forms the

floor of the orbit

81

maxillary floor is part of
is located .5-1 cm belos

the alveolar potion of the maxilla.
the nasal cavity

82

maxillary sinus posterior wall forms the

anterior wall of the pterygopalatine fossa and infra temporal fossa

83

maxillay sinus drains by ____action, and____ into __

ciliary action
gravity and negative pressure
one or more openings into the hiatus semilunaris

84

maxillary sinusitis may be associated with a ______

toothache of the first or second molars

85

maxillary infections may spread where, bc of their intimate relationships with e/o

frontal, anterior ethmoidal cells, nasal cavity, teeth, and maxillary sinus

86

Sphenoidal sinus relationship to adjacent structures
posterior

pons, basilar artery

87

Sphenoidal sinus relationship to adjacent structures
superior

pituitary

88

Sphenoidal sinus relationship to adjacent structures
anterior

nasal cavity

89

Sphenoidal sinus relationship to adjacent structures
inferior

nasopharynx

90

Sphenoidal sinus relationship to adjacent structures
lateral

internal carotid, cavernous sinus

91

break through the root of the sphenoidal sinus, what will you hit

pituitary

92

break through the lateral wall of the sinus, what will you hit

venous or arterial damage

93

pituitary sits in

sella turcica

94

sphenopalatine fossa and ganglion is located between

pterygoid portion of sphenoid bone and palatine bone

95

sphenopalatine ganglion is attached to the

maxillary nerve (V2)

96

branches of sphenopalatine ganglion(3)

vidian nerve
lesser and greater palatine nerves
nasopalatine nerve

97

Vidian nerve is formed by merging of

deep petrosal and great petrosal nerves.

98

vidian nerve coneys

postganglionic sympathetic, GVE parasympathetic and GVA fibers to the sphenopalatine ganglion, where it ends

99

Lesser and greater palatine nerves (largest branches of sphenopalatine ganglion) convey

GSA (v2)
GVA (VII)
GVE-P
postganglionic sympathtetic
to mucosa of inferior surface of soft and hard palate, respectively

100

Nasopalatiene never distributes

same components as palatine nerves to mucosa of posterior nasal septum and lateral nasal cavity.

101

4 functional components associated with pterygopalatine (sphenopalatine) ganglion

1. sensory GVA
2. Postganglionic sympathetic fibers
3. Preganglionic parasympathetic fibers synapse in pterygopalatine ganglion
4. Post ganglioinc parasympathetic fibers supply lacrimal gland