Anatomy of the Palate and Pharynx Flashcards

(56 cards)

1
Q

What makes up the oral vestibule?

A

between the lips and teeth

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2
Q

What vertebral line can the hyoid bone be found?

A

C3 - in line with the base of the mandible

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3
Q

What is the opening for the submandibular glands?

A

sublingual caruncle

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4
Q

What happens if you have a long frenulum?

A

tongue sticks out a lot

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5
Q

What are the 2 muscles of the floor of the mouth?

A

mylohyoid

geniohyoid

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6
Q

What innervates the mylohyoid?

A

CN V3 - muscle runs diagonally

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7
Q

What innervates the geniohyoid?

A

C1 via the hypoglossal nerve

- banded muscle

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8
Q

How many ml is secreted a day by the salivary glands?

A

500-750ml

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9
Q

How does the parotid gland secrete saliva?

A

through the 2nd upper molar

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10
Q

How does the submandibular gland secrete saliva?

A

via the lingual caruncle

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11
Q

How does the sublingual gland secrete saliva?

A

several ducts that are superior to it

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12
Q

What innervates the sublingual and submandibular glands?

A

CN VII - lingual nerve branch (of chorda tympani and CN V3)

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13
Q

What innervates the parotid gland?

A

glossopharyngeal nerve (CN IX)

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14
Q

What part of the tongue is not in the oral cavity?

A

posterior 1/3rd

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15
Q

What supplies the posterior 1/3rd of the tongue?

A

CN IX

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16
Q

What supplies general sensory to the anterior 2/3rds of the tongue?

A

CN V3

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17
Q

What supplies teaste to the anterior 2/3rds of the tongue?

A

CN VII - chorda tympani

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18
Q

What is the sulcus terminalis?

A

line on the tongue

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19
Q

Where does the thyroid originate in development?

A

pharynx

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20
Q

Where does the thyroid decend down after originating in the pharynx?

A

foramen caecum

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21
Q

What are the 4 muscles of the tongue?

A

palatoglossus
genioglossus
styloglossus
hyoglossus

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22
Q

What muscle of the tongue is supplied by CN X?

A

palatoglossus

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23
Q

What are the tongue muscles (apart from the palatoglossus) supplied by?

A

CN XII - hypoglossal

24
Q

What is the role of the extrinsic muscles of the tongue?

A

change the postition of the tongue when swallowing, during mastication and speech - FUNCTION

25
What is the role of the intrinsic muscles of the tongue?
modify the shape of the tongue during its function
26
How does the hypoglossal CN XII exit the brain?
connects to the medulla oblongata exits brain through the hypoglossal canal in the anterior wall of the foramen magnum - in the ocipital bone decends down the neck lateral to the carotid sheath gets to C3 - hyoid bone level and passes anteriorly towards the tongue
27
How is the hypoglossal CN XII tested?
patient sticks tongue out - tongue should be in midline | tongue will point towards the damaged side if not normal
28
What is the blood supply to the tongue? Where does it come from?
lingual artery | comes off the external carotid
29
Where do arteries pass in relation to the hyoglossus?
medially
30
Where do nerves pass in relation to the hyoglossus?
laterally
31
What is the histology of the hard palate? front bit
keratinised stratified squamous epithelium
32
What is the histology of the soft palate? back bit
non keratinised squamous epithelium
33
What are the folds on the top of the mouth called?
rugae
34
What is the role of the greater and lesser palatine foramina?
allow the branches of CN V2 and maxillary artery through
35
What is the nerve supply to the muscles of the soft palate (except tensor veli palatini)?
CN X - vagus
36
What is the tensor veli palatini innervated by?
CN V3
37
What is the role of the tensor veli palatini?
tenses the palatine aponeurosis | moves the flap
38
What is the role of the levator veli palatini?
lifts the palatine aponeurosis
39
What is the role of the mosculus uvulae?
shortens the uvula
40
What is the role of the palatoglossus?
brings the tongue and soft palate together
41
What is the role of the palatopharyngeus?
lifts pharynx and thyroid cartilage pulls palate down extends from the palatine aponeurosis
42
What is the function of the soft palate?
a trap door to stop food from entering the nose during swallowing directs air into the nose or mouth during speech, sneezing and vomiting helps to close of entrance to the oropharynx
43
How is the vagus nerve tested?
patient says Ahhh uvula should be central if there is a problem the uvula will move away from the damaged side
44
What are the muscles of the outer circular layer of the pharynx? What is their role?
3 constrictor muscles | pushes food bolus inferiorly towards the oesophagus
45
What are the muscles of the inner longitudinal layer of the pharynx? What is their role?
3 paired vertical muscles | contracts and pulls the larynx superiorly shortening the pharynx during swallowing
46
What makes up the superior muscles of the outer circular layer?
pterygoid hamrus pterygomandibular raph mylohyoid line
47
What makes up the middle muscles of the outer circular layer?
greater horn of the hyoid
48
What makes up the inferior muscles of the outer circular layer?
thyroid cartilage and cricoid cartilage
49
What are all of the muscles in the outer circular layer innervated by?
CN X via the pharyngeal plexus
50
What is the role of the gaps between the outer circular layer muscles?
allow the lingual artery, CN IX and the stylopharyngeus muscle through the mouth
51
What muscles make up the inner longitudinal layer of the pharynx?
Stylopharyngeus Palatopharyngeus Salpingopharyngeus
52
What are the features of the stylopharyngeus?
passes through the gateway to the mouth with the glossopharyngeal nerve supplied by CN IX - glossopharyngeal comes from the styloid process
53
What longitudinal muscles are supplied by CN X?
palatopharyngeus | salpingopharyngeus
54
What is the torus tubaris?
opening of the Eustachian tube
55
What comprises Waldeyers Tonsillar Ring?
pharyngeal tonsil tubal tonsil palatine tonsil lingual tonsil
56
What drains the palatine tonsil?
jugulo-digastric node