Oral Cavity 1

Question 1

What are the boundaries of the oral cavity?

Answer 1

Extends from the lips to the oropharyngeal isthmus

Question 2

What is the oropharyngeal isthmus?

Answer 2

Is the junction of mouth and pharynx

Question 3

Answer 3

Question 4

Answer 4

Question 5

What is the oral cavity divided into?

Answer 5

Vestibule and oral cavity proper

Question 6

What is the vestibule?

Answer 6

Slit like space between the cheeks and the gums

Question 7

What is the oral cavity proper?

Answer 7

Everything

Not cheeks and teeth

Question 8

Answer 8

Question 9

Where does the vestibule communicate with the oral cavity proper?

Answer 9

The cavity behind the third molar on each side

Question 10

What muscle forms the lateral wall of vestibule?

Answer 10

Buccinator muscle

Question 11

What covers the cheek (buccinator muscle medically and laterally?

Answer 11

Laterally = skin

Medially = mucous membrane

Question 12

What is the small papilla?

Answer 12

mark the opening of ducts and bumps/taste buds on tongue

Question 13

Where are the small papilla found in the vestibule?

Answer 13

Upper second molar tooth

Question 14

What do the papilla near the upper second molar tooth mark?

Answer 14

Duct of the parotid gland

Question 15

What alveolar margins are the oral cavity proper within?

Answer 15

The maxillae and the mandible

Question 16

What forms the roof of the oral cavity proper?

Answer 16

Formed by the hard palate anteriorly and the soft palate posteriorly

Question 17

What forms the floor of the oral cavity proper?

Answer 17

Mylohyoid muscle

Question 18

What part of the tongue lies on the floor of the oral cavity proper?

Answer 18

Anterior 2/3

Question 19

Answer 19

Question 20

Answer 20

Question 21

What is the floor of the mouth covered in?

Answer 21

Mucous membrane

Question 22

What does the frenulum connect?

Answer 22

The tongue to the floor of the mouth

Question 23

What is found at each side of the frenulum?

Answer 23

A small papilla has the opening of the duct of the submandibular gland

Question 24

What does the sublingual gland drain into?

Answer 24

Submandibular lymph nodes

Question 25

Answer 25

Question 26

What nerves supply the roof of the oral cavity?

Answer 26

Greater palatine and nasopalatine nerves - branches of maxillary nerve

Question 27

What are the greater palatine and nasopalatine nerves branches of?

Answer 27

The maxillary nerve

Question 28

What nerve supplies the floor of the oral cavity?

Answer 28

Lingual nerve (branches of mandibular nerve)

Question 29

what nerve supply the cheek of the oral cavity?

Answer 29

Buccal nerve (branch of mandibular)

Question 30

what are the buccal and lingual nerves branches of?

Answer 30

Mandibular nerve

Question 31

What type of innervate on are the greater palatine, nasopalatine, lingual and buccal nerves?

Answer 31

Sensory innervate on

Question 32

What gives motor innervation to the buccinator and orbicularis oris muscles?

Answer 32

Branches of the facial nerve

Question 33

Describe the tongue

Answer 33

Mass fo striated muscles covered with muscles membrane

Question 34

What separates the left and right halves of the tongue?

Answer 34

Median septum

Question 35

Name the 3 parts of the tongue

Answer 35

Oral (anterior 2/3) Pharyngeal (posterior 1/3) Root

Question 36

What are the dorsal and ventral parts of the tongue?

Answer 36

Dorsal = bigger upper surface Ventral = under the tongue

Question 37

What differentiates the anterior 2/3 and posterior 1/3 of tongue?

Answer 37

V -shaped sulcus terminalis

Question 38

what marks the apex of the sulcus terminalis?

Answer 38

Foremen cecum

Question 39

Answer 39

Question 40

What does the foremen cecum mark?

Answer 40

Upper end of the thyroglossal duct

Question 41

What are the 3 types of papillae in the anterior 2/3 of the tongue?

Answer 41

Filliform Fungiform Vallate

Question 42

Does the posterior 1/3 of tongue have papillae?

Answer 42

No

Question 43

What does the posterior 1/3 of tongue show?

Answer 43

Modular surface because of underlying lymphatic nodules, the lingual tonsils

Question 44

Answer 44

Question 45

What vein is found laterally to the frenulum?

Answer 45

deep lingual vein

Question 46

What drug is absorbed under the tongue?

Answer 46

Nitroglycerin

Question 47

What is nitroglycerin used for?

Answer 47

Vasodilator In angina pectoris

Question 48

What blood vessel does nitroglycerin enter?

Answer 48

The deep lingual veins

Question 49

What lies laterally to the lingual vein?

Answer 49

A fold of mucosa forms the plica fimbriata

Question 50

what 2 types of muscle make the tongue?

Answer 50

Intrinsic and extrinsic

Question 51

What are the intrinsic muscles of teh tongue?

Answer 51

Longitudinal fibres Transverse fibres Vertical fibres Confined to tongue

Question 52

What is the function of the intrinsic muscles of the tongue?

Answer 52

alter tongue shape

Question 53

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

Answer 53

Help movements of the tongue

Question 54

What are the extrinsic muscles of the tongue?

Answer 54

Palatoglossus Genioglossus Hyoglossus Styloglossus

Question 55

What structures do the extrinsic muscles connect the tongue to?

Answer 55

To surrounding structures The soft palate and the bones (mandible, hyoid bone, style I’d process)

Question 56

What is the movement of the genioglossus?

Answer 56

Protrusion

Question 57

What is the movement of the styloglossus?

Answer 57

Retraction an elevation

Question 58

What is the movement of the hyoglossus?

Answer 58

Retraction and depression

Question 59

What is the movement of the palatoglossus?

Answer 59

elevation

Question 60

What muscles allow retraction of tongue?

Answer 60

Styloglossus and hyoglossus

Question 61

What muscles allow depression of the tongue?

Answer 61

Hyoglossus and genioglossus

Question 62

What muscles of teh tongue allow elevation?

Answer 62

Styloglossus and palatoglossus