Digestive - Sheet1

Question 1

What forms the mouth?

Answer 1

Cheeks, hard and soft palate, lips, and tongue.

Question 2

What bounds the vestibule of the oral cavity?

Answer 2

Cheeks and lips (externally), gums and teeth (internally).

Question 3

What is the oral cavity proper?

Answer 3

Space from gums and teeth to the pharynx.

Question 4

Where does the remainder of saliva come from?

Answer 4

Buccal glands.

Question 5

Name the three pairs of salivary glands.

Answer 5

Parotid, submandibular, sublingual.

Question 6

What are the functions of saliva?

Answer 6

Lubricates, dissolves food, starts digestion, keeps mouth and throat moist.

Question 7

What is the composition of saliva?

Answer 7

99.5% water, 0.5% solutes.

Question 8

What controls salivation?

Answer 8

Nervous system.

Question 9

What forms the floor of the oral cavity?

Answer 9

Tongue and muscles.

Question 10

What permits tongue movement for food manipulation?

Answer 10

Extrinsic and intrinsic muscles.

Question 11

What is the lingual frenulum?

Answer 11

Fold of mucous membrane under the tongue.

Question 12

What covers the upper surface and sides of the tongue?

Answer 12

Papillae.

Question 13

What enzyme is secreted on the tongue’s dorsum?

Answer 13

Lingual lipase.

Question 14

What does lingual lipase do?

Answer 14

Initiates fat digestion.

Question 15

Name the three parts of a tooth.

Answer 15

Crown, root, neck.

Question 16

What gives teeth their shape and rigidity?

Answer 16

Dentin.

Question 17

What covers the crown’s dentin?

Answer 17

Enamel.

Question 18

What covers the root’s dentin?

Answer 18

Cementum.

Question 19

What encloses the pulp cavity and root canals?

Answer 19

Dentin.

Question 20

Name the two sets of teeth in a lifetime.

Answer 20

Deciduous (primary), permanent (secondary).

Question 21

Name the four types of teeth by shape.

Answer 21

Incisors, canines, premolars, molars.