Throat Flashcards

1
Q

What are the functions of the oral cavity?

A

Digestion
Communication
Breathing

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2
Q

What are the 2 parts of the oral cavity?

A

Oral vestibule

Oral cavity proper

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3
Q

What is the oral vestibule?

A

Bit between the lips and the teeth

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4
Q

What controls the diameter of the oral vestibule?

A

Muscles of facial expression

Principally the orbiculairs oris

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5
Q

Where does the oral vestibule communicate with the oral cavity proper?

A

Space behind the 3rd molar

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6
Q

What are the 2 parts of the oral roof?

A

Hard palate

Soft palate

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7
Q

Where is the hard palate found?

A

Found anteriorly

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8
Q

What is the hard palate?

A

Composed of the palatine bone

Separates the oral cavity from nasal cavity

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9
Q

Where is the soft palate found?

A

Posteriorly of the oral roof

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10
Q

What type of structure does the soft palate have?

A

Muscular

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11
Q

What is the purpose of the soft palate during swallowing?

A

Can elevate to separate the nasopharynx from the oropharynx during swallowing

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12
Q

Where does the parotid duct open into?

A

Opposite the upper 2nd molar

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13
Q

Which muscle does the parotid duct pierce?

A

Pierces the buccinator muscle

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14
Q

What are the 2 lobes of the submandibular gland?

A

Superficial and deep lobes

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15
Q

Which muscle separates the superficial and deep love of the submandibular gland

A

Mylohyoid muscle

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16
Q

Which muscle does the submandibular gland lie superiorly to?

A

Digastric muscle

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17
Q

What are the functions of the oral cavity?

A
Taste
Mastication 
Speech 
Digestion 
Swallowing
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18
Q

What tissue is the tongue composed of?

A

Skeletal muscle

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19
Q

What is the tongue covered by?

A

Mucous membrane

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20
Q

Which structure splits the tongue into 2 parts?

A

Sulcus Terminalis

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21
Q

Which nerve supplies sensation to the anterior 2/3 of the tongue?

A

Lingual branch of V3

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22
Q

Which nerve supplies taste sensation to the anterior 2/3 of the tongue?

A

Chorda tympani

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23
Q

From which branchial arch does the anterior 2/3 of the tongue develop from?

A

1st branch

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24
Q

From which branchial arch does the posterior 1.4 of the tongue develop from?

A

3rd branchial arch

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25
Which nerve supplies bot sensory and taste of the posterior 1/3 of the tongue?
CN IX
26
Which are the most numerous papillae?
Filiform papillae
27
Which papillae does not contain taste buds?
Filiform papillae
28
What are filiform papillae used for?
Sensation of the tongue
29
Which papillae are scattered through the dorsum of the tongue?
Fungiform papillae
30
Which papillae are mostly concentrated at the tip of the tongue?
Fungiform
31
Which papillae distinguish the 5 tastes?
Fungiform
32
Where are the Circumvallate Papillae placed?
In a row just anterior to the sulcus terminalis
33
What are the 2 groups of muscles in the tongue?
Intrinsic | Extrinsic
34
Are the intrinsic muscles of the tongue attached to bone?
No
35
What do intrinsic muscle of the tongue alter?
Alter shape
36
What do extrinsic muscles of the tongue alter?
Tongue position
37
Where do extrinsic muscle originate from and extend to?
Originate from bone and extend to the bone
38
What is the nerve supply to the muscles of the tongue?
CN XII Hypoglossal | Except palatoglossus
39
Which nerve supplies the palatoglossus?
CN X (vagus)
40
What are the main muscles of mastication?
Masseter Temporalis Lateral and medial pterygoid
41
What is the innervation of muscles of mastication?
CNV3
42
What is the pharynx?
Muscular tube that connects the nssal cavities to the larynx and oesophagus
43
What are the 3 parts of the pharynx?
Naso Oro Laryngo pharynx
44
Where is the oropharynx located?
Between soft palate and the superior border of the epiglottis
45
What is the oropharynx involved in?
The voluntary and involuntary phases of swallowing
46
What are the boundaries of the oropharynx?
Lower border of the soft palate Superior border of epiglottis Palatoglossal arch to posterior pharyngeal wall Lateral - faucial pillar and palatine tonsils
47
Describe the oral phase of swallowing
Tongue propels the bolus into the pharynx | Triggers swallowing reflex
48
Describe the Pharyngeal phase of swallowing
Soft palate at back of tongue pulled upwards- covers the nasopharynx Epiglottis covers the larynx, vocal cord approximate, larynx moves upward Upper oesophageal sphincter (UOS) relaxes Respiration is reflex inhibited
49
Describe the oesophageal phase of swallowing
Once bolus passed UOS, the sphinter constricts | Bolus propelled downwards by peristaltic motion, reflex via myenteric plexus
50
In which compartment of the neck is the larynx found?
Anteriorly | In the visceral compartment
51
Between which levels does the larynx spand?
C3-C6
52
With which structure does the larynx continue with inferiorly?
Trachea
53
With which structure does the larynx open superiorly with?
Laryngeal part of the pharynx
54
What is the function of the larnyx?
Voice | Swallowing
55
What are the three part of the larynx?
Supraglottis Glottis Subglottic
56
What are cartilages of the larynx?
Thyroid Arytenoid Cricoic Corniculate
57
Which cartilage of the larynx is paired?
Arytenoid
58
Which cartilage of the larynx creates a C shape?
Cricoid
59
What is the function of the extrinsic muscles of the larynx?
Move entire laryngeal complex
60
What is the function of the intrinsic muscles of the larynx?
Regulate movements of the vocal cords
61
What is the N. supply of the motor innervation of the larynx?
Recurrent laryngeal n.
62
What is the sensory innervation of the supraglottis?
Internal laryngeal n.
63
What is the sensory innervation of the glottis and subglottis?
Recurrent laryngeal n.