21) The ________ duct empties into the vestibule at the level of the second upper molar.

A) submaxillary

B) submandibular

C) parotid

D) sublingual

E) vestibular

22) The bulk of a tooth consists of a mineralized matrix similar to that of bone called

A) enamel.

B) cementum.

C) dentin.

D) pulp.

E) periodontium.

23) The root of a tooth is anchored by

A) pulp.

B) periodontal ligaments.

C) the root canal.

D) enamel.

E) dentin.

24) Which of the following contains a crystalline form of calcium phosphate and is the hardest biologically manufactured substance?

A) enamel

B) cementum

C) dentin

D) pulp

E) periodontium

25) The roof of the oral cavity is formed by the

A) vestibule.

B) hard and soft palate.

C) gingival.

D) tongue.

E) pharynx.

26) The space between the cheeks or lips and the teeth is called the

A) pharynx.

B) larynx.

C) epiglottis.

D) vestibule.

E) cheek.

27) Secondary dentition results in a permanent tooth count of ________.

A) 32

B) 24

C) 21

D) 40

E) 38

28) The ________ are teeth with flattened crowns and prominent ridges that are adapted for grinding, crushing, and mashing.

A) molars

B) cuspids

C) eyeteeth

D) canines

E) incisors

29) The digestion of carbohydrates and lipids begins in the

A) oral cavity.

B) esophagus.

C) stomach.

D) small intestine.

E) large intestine.

30) Ducts from which of the following open into the mouth behind the teeth on either side of the lingual frenulum?

A) sublingual salivary glands

B) pancreas

C) submandibular salivary glands

D) parotid salivary glands

E) lingual salivary glands