11) Oral Cavity and Tongue Flashcards Preview

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Flashcards in 11) Oral Cavity and Tongue Deck (37):
1

What forms the roof of the oral cavity?

Hard and soft palate

2

What forms the floor of the oral cavity?

Tongue and other soft tissues

3

What forms the lateral walls of the oral cavity?

Cheek (buccinator muscles)

4

What forms the anterior opening of the oral cavity?

Oral fissure

5

What forms the posterior opening of the oral cavity?

Oropharyngeal isthmus

6

What is the oral vestibule?

Space between teeth and cheeks/lips

7

What is the oral cavity proper?

Space between teeth to palatopharyngeal arch, uvula and epiglottis

8

What is the anterior arch of the oropharyngeal isthmus and what muscle forms this?

Palatoglossal arch by palatoglossus muscle

9

What is the posterior arch of the oropharyngeal isthmus and what muscle forms this?

Palatopharyngeal arch by palatopharyngeus muscle

10

What is the function of the muscles of the soft palate?

Elevate soft palate during swallowing and yawning

11

What forms the hard palate?

Maxilla and palatine bone

12

What is the innervation to the soft palate?

Vagus nerve (pharyngeal branch)

13

In terms of the uvula, how does damage to the vagus nerve present?

Stronger side is unopposed so pulls uvula away from side of affected nerve

14

Why is the gag reflex important?

Prevents choking

15

What would be seen upon testing of the gag reflex?

Lift of soft palate

16

Describe the nervous arc in the gag reflex:

Afferent limb: glossopharyngeal
Efferent limb: vagus

17

Name the teeth found in a normal adult:

Central incisors, lateral incisors, canines, pre-molars and molars

18

Describe the nervous supply to the lower jaw:

Inferior alveolar nerve (V3)

19

A patient presents to you with loss of sensation over lower jaw after being punched in the same area, what is likely to have happened?

Mandibular fracture causing damage to inferior alveolar nerve running in mandibular fossa

20

What are the 4 extrinsic muscles of the tongue?

Genioglossus
Hyoglossus
Styloglossus
Palatoglossus

21

What are the functions of the extrinsic muscles of the tongue?

Anchor tongue to hyoid and mandible
Allow tongue to change position

22

What are the 4 intrinsic muscles of the tongue?

Superior longitudinal, vertical, transverse and inferior longitudinal

23

What are the functions of the intrinsic muscles of the tongue?

Change shape of the tongue

24

Describe the sensory innervation to the tongue:

Anterior 2/3rds:
General: lingual (V3)
Special: chorda tympani (VII)

Posterior 1/3rd: glossopharyngeal (IX)

25

How would a person with damage to right hypoglossal nerve present?

Tongue deviating to right side

26

Through which duct to parotid gland secretions enter the oral cavity?

Stenson's duct

27

Through which duct to submandibular gland secretions enter the oral cavity?

Wharton's duct

28

A patient comes to you and states that they get a swelling on their lower jaw while eating. What is the likely diagnosis?

Salivary stone in submandibular duct

29

What is tonsillitis?

Inflammation of palatine tonsil

30

How does tonsillitis present?

Sore throat
Odynophagia/dysphagia
Tonsils enlarged and erythematous

31

What are some viral causes of tonsillitis?

Rhinovirus and adenovirus

32

What are some bacterial causes of tonsillitis?

Beta-haemolytic strep

33

How would you differentiate between viral and bacterial tonsillitis?

Viral: dry cough
Bacterial: cervical lymphadenopathy, fever and pus

34

What is a severe complication of bacterial tonsillitis?

Peritonsillar abscess (Quinsy)

35

What are the common causes of peritonsillar abscess?

Strep pyogenes
S. aureus, H. influenza or mixed flora

36

How would those with a peritonsillar abscess present?

Systemically unwell, trismus, drooling, unilateral abscess

37

How would you tell the difference between tonsillitis and peritonsillar abscess?

Anterior arch remains, exudate and bilateral swelling in tonsillitis but not in quinsy