The Mouth And Oral Cavity

Question 1

What is the location of the mouth ?

Answer 1

• it is the foremost part of the gut
• links the external environment to the oral pharynx

Question 2

What is the function of the mouth ?

Answer 2

• selects, ingests, masticates and swallows food
• respiration, speech, offence and defence

Question 3

What is the anterior boundary of the mouth ?

Answer 3

Lips/labia

Question 4

What is the posterior boundary of the mouth ?

Answer 4

Oral pharyngeal isthmus

Question 5

What does the oral pharyngeal isthmus do ?

Answer 5

It links the oral cavity with the oral pharynx

Question 6

What is the lateral boundary of the mouth ?

Answer 6

Cheeks/buccai towards the front
Retromandibular region towards the back

Question 7

What is found on the floor of the mouth ?

Answer 7

The tongue and underneath the tongue is the oral cavity proper

Question 8

What is found at the roof of the mouth ?

Answer 8

The hard pallet anteriorly and the soft pallet posteriorly

Question 9

What type of mucosa is the labial mucosa ?

Answer 9

Lining mucosa

Question 10

What are the 2 types of mucosa ?

Answer 10

1) lining mucosa - not keratinised
2) masticating mucosa - keratinised

Question 11

What is the competent lip posture position ?

Answer 11

When a person can close their lips to form an anterior oral seal without straining the facial musculature

Question 12

What type of mucosa is the buccal mucosa ?

Answer 12

Lining mucosa

Question 13

What type of mucosa is the attached gingiva ?

Answer 13

Masticating mucosa

Question 14

What type of organ is the tongue ?

Answer 14

Muscular organ

Question 15

What is the functions of the tongue ?

Answer 15

• moves food around when chewing
• helps to select food
• swallowing
• important in speech

Question 16

What is the epiglottis ?

Answer 16

A flap which covers the voice box

Question 17

What type of mucosa is found on the ventral surface of the tongue ?

Answer 17

Lining mucosa

Question 18

What is the function of the hard palate ?

Answer 18

Divides the oral cavity from the nasal cavity

Question 19

What is the function of the soft palate ?

Answer 19

Divides the oral cavity from the nasal pharynx

Question 20

What type of mucosa is found on the palate ?

Answer 20

Masticating mucosa

Question 21

Which nerve does the submucosa found behind the molars contain ?

Answer 21

Greater palatine nerve

Question 22

What is the role of the transverse palatine suture ?

Answer 22

It separates the palatine processes of the maxillary bone from the horizontal plates of the palatine bone

Question 23

What is the function of the soft palate ?

Answer 23

It elevates when you swallow to stop food entering the nasal area

Question 24

What is the boundary between the hard and soft palate ?

Answer 24

• vibrating line
• soft palate slightly yellower in colour

Question 25

What is the linea alba ?

Answer 25

White lines running across the buccal mucosa
It is an area of masticating mucosa

Question 26

What are fordyce spots ?

Answer 26

Ectopic sebaceous glands
Yellow spots which may appear after puberty

Question 27

Where is the opening of the parotid duct ?

Answer 27

It usually opens adjacent to the upper second molar

Question 28

What is gingival fibromatosis ?

Answer 28

When the gums have overgrown the teeth because -
- the patient may have taken epinutin
- may be hereditary

Question 29

What is an epulis ?

Answer 29

Extra tissue in the mouth

Question 30

What is nicotine stomatitis ?

Answer 30

Inflammation due to smoking

Question 31

What is torus palatinus ?

Answer 31

A bony addition to the hard palate

Question 32

What is tongue tie ?

Answer 32

When the lingual frenum has grown and attached to the attached gingiva