Lesson 2.1: Anatomy of the Oral Cavity

Question 1

Part of the tooth encased in enamel; above and below the gum line

Answer 1

Anatomical Crown

Question 2

Root tip

Answer 2

Apex

Question 3

Name for the opening at the root tip (where blood vessels and nerves enter)

Answer 3

Apical foramen

Question 4

Where the anatomical crown and root meet

Answer 4

Cemento-enamel junction

Question 5

Part of the tooth covered in enamel; above the gum line

Answer 5

Clinical crown

Question 6

Portion of the tooth covered by enamel

Answer 6

Crown

Question 7

Innermost section of the tooth that provides sensation

Answer 7

Pulp

Question 8

Runs from the apical foramen to the pulp chamber

Answer 8

Pulp Canal

Question 9

This encases the pulp

Answer 9

Pulp Chamber

Question 10

This makes up the anatomical crown’s outer layer

Answer 10

Enamel

Question 11

Enamel is the ______ material in the human body

Answer 11

hardest

Question 12

Enamel is able to withstand crushing stresses of about _________?

Answer 12

100,000 psi

Question 13

Enamel is incapable of _______ and _______.

Answer 13

remodeling, repair

Question 14

Enamel is composed of __ to __ percent of inorganic material

Answer 14

96 to 99

Question 15

Makes up the bulk of the tooth

Answer 15

Dentin

Question 16

Dentin is _____ of continued growth and repair

Answer 16

capable

Question 17

Dentin is the ______ hardest calcified tissue in the human body

Answer 17

second

Question 18

Dentin is composed of approximately ___ percent inorganic material and ___ percent organic material

Answer 18

70/30

Question 19

Anchors the tooth to the bony socket via attachment fibers

Answer 19

Cementum

Question 20

The ________ is the vital center of the tooth. It is a soft tissue compound of loose, connective tissue containing numerous nerves, blood, and lymph vessels

Answer 20

dental pulp

Question 21

The pulp chamber is located within the _____ of the tooth

Answer 21

crown

Question 22

The pulp canal is within the _____ of the tooth

Answer 22

root

Question 23

The primary function of the dental pulp is _________

Answer 23

the formation of dentin

Question 24

Extension of the mandible and maxilla; forms sockets and supports teeth

Answer 24

Alveolar process

Question 25

Tissue surrounding the teeth

Answer 25

Gingiva (gums)

Question 26

Extends from the base of the sulcus to the cheek, lip, under tongue or the soft palate; self-protecting, resilient, firm tissue

Answer 26

Attached gingiva

Question 27

The area from the gingival margin to the base of the gingival sulcus; not attached to bone

Answer 27

Unattached gingiva (Free gingiva)

Question 28

Space between free gingiva and tooth

Answer 28

Gingival sulcus

Question 29

Healthy sulcus rarely exceeds __ mm

Answer 29

2-3

Question 30

Tissue that attaches to the tooth and forms the base of the sulcus

Answer 30

Epithelial attachment

Question 31

The lowest point of the free gingiva

Answer 31

Epithelial attachment

Question 32

Unattached gingiva that fills space between teeth

Answer 32

Interdental papilla

Question 33

What are the three types of Unattached gingiva?

Answer 33

1. Gingival Sulcus 2. Epithelial Attachment 3. Interdental Papilla

Question 34

Dense Fibrous tissue between cementum and bone that cushions and connects the tooth to the alveolar socket

Answer 34

Periodontal Ligament

Question 35

Five functions of the periodontal ligament

Answer 35

1. Formative 2. Supportive 3. Protective 4. Nutritive (Nutrition) 5. Resorptive

Question 36

Consists of the alveolar process, gingiva, and periodontal ligaments

Answer 36

Periodontium

Question 37

Specialized mucous membrane that covers the entire oral cavity

Answer 37

Oral mucosa

Question 38

Three types of oral mucosa

Answer 38

1. Lining mucosa 2. Masticatory mucosa 3. Specialized mucosa

Question 39

An oral digestive fluid

Answer 39

Saliva

Question 40

Every 24 hours _____ pints of saliva are produced by the salivary glands

Answer 40

2-3

Question 41

Saliva helps maintain the integrity of the tooth surfaces through a process of ________

Answer 41

remineralization

Question 42

Saliva is excreted by these 3 major glands

Answer 42

1.Parotid glands 2. Submandibular glands 3 Sublingual glands

Question 43

A mass of flexible voluntary muscles located in the mouth

Answer 43

Tongue