The Oral Cavity

Question 0

What is the skin on the outside of the lips?

Answer 0

keratinised stratified epithelium

Question 1

What muscle are the lip attached to?

Answer 1

The obicularisoris muscle

Question 2

What is the skin on the inside of the lips?

Answer 2

stratified squamous epithelium

Question 3

What are the lips attached to the gym by?

Answer 3

The frenula

Question 4

What is the interior lining of the cheeks made of?

Answer 4

moist stratified squamous epithelium

Question 5

The cheek is flattened against the teeth by which muscle?

Answer 5

The buccinator muscle

Question 6

What rounds out the face and is more prominent in babies?

Answer 6

The buccal fat pad

Question 7

What are the anterior two thirds or the palate?

Answer 7

Hard palette, bony formed from the maxillar and palatine bone

Question 8

What is the posterior 1/3rd of the palette?

Answer 8

The soft palette, skeletal muscle covered in connective tissue

Question 9

What is the function of the palette?

Answer 9

Separates the oral and nasal cavities and stops food coming out your nose

Question 10

What is the tongue composed of?

Answer 10

Intercalating bundles of skeletal muscle with the posterior 1/3rd being pharyngeal and the anterior 2/3rds being oral

Question 11

How is the tongue connected to the floor of the oral cavity?

Answer 11

By the lingual frenulum

Question 12

What are the bumps at the back of the tongue called?

Answer 12

Lymphora nodules which are made up of lymphoid tissue and act and tonsils to fight infection

Question 13

What is the division that divides the tongue in two parts called?

Answer 13

The terminal sulcus divides into posterior 1/3rd (presulcal) and anterior 2/3rds (postsulcal)

Question 14

What are the muscles of the tongue?

Answer 14

• 4 pairs of intrinsic muscles which originate and stay within the tongue and change the shape of the tongue
• 3 pairs of extrinsic muscles that are from structures outside the tongue but are attached to it and let you stick your tongue out

Question 15

How many teeth do adults have and what are the dental arches?

Answer 15

32 and the upper (maxillary) and lower (mandibulae) - divided into 4 quadrants RU, LU, RL, LL

Question 16

At what age do baby teeth appear and when are they replaced and what do they consist of?

Answer 16

• 6-24 months
• 12 years old
• 2 incisions, one canine, 1st molar and 2nd molar per quadrant

Question 17

What does the permanent dentition consist of?

Answer 17

2 incisors, 1 canine, 1st premolar, 2nd premolar, 1st molar, 2nd molar and 3rd molar per quadrant (6-12 years eruption for the all except wisdom teeth which is up to 25)

Question 18

What are incisors for?

Answer 18

biting and cutting

Question 19

What are canines for?

Answer 19

Tearing

Question 20

What are molars for?

Answer 20

grinding

Question 21

What are the clinical and anatomical crowns of the tooth?

Answer 21

• Clinical = exposed above the gum and the anatomical goes into the gum

Question 22

What is the neck of the tooth?

Answer 22

connects the crown and the root

Question 23

What is the dentin of the teeth protected by?

Answer 23

bone-like cementum striations called dontoblasts

Question 24

What is the dentin?

Answer 24

Living cellular, calcified tissue

Question 25

What does the dentin surround and what does this structure contain?

Answer 25

The pulp cavity which contains blood vessels nerves and connective tissue called pulp - this is the root canal

Question 26

What bone are the teeth set in?

Answer 26

Alveolar bone along the alveolar processes of the mandible and maxilla

Question 27

What is the alveolar process covered by?

Answer 27

Dense, fiborus connective tissue called gingiva

Question 28

What is the apical foramen?

Answer 28

Where nerves and blood vessels enter and exit the pulp cavity

Question 29

What secures the teeth in the alveoli?

Answer 29

Periodontal ligaments