Digestive System: Oral Cavity

Question 1

2 regions of oral cavity or mouth

Answer 1

vestibule

oral cavity proper

Question 2

is the space between the lips or cheeks and the teeth

Answer 2

vestibule

Question 3

lies medial to the teeth.

Answer 3

oral cavity proper

Question 4

is lined with moist stratified squamous epithelium, which protects against abrasion.

Answer 4

oral cavity

Question 5

are muscular structures formed mostly by the orbicularis oris muscle and connective tissue

Answer 5

lips or labia

Question 6

which are mucosal folds, extend from the alveolar process of the maxilla to the upper lip and from the alveolar process of the mandible to the lower lip

Answer 6

labial frenula

Question 7

form the lateral walls of the oral cavity.

Answer 7

cheeks

Question 8

rounds out the profile on the side of the face.

Answer 8

buccal fat pad

Question 9

which flattens the cheek against the teeth,

Answer 9

buccinator muscle

Question 10

roof of the oral cavity

Answer 10

palate

Question 11

The anterior, bony part of the palate

Answer 11

hard palate

Question 12

The posterior, nonbony part of palate which consists of skeletal muscle and connective tissue.

Answer 12

soft palate

Question 13

is a posterior projection from the soft palate.

Answer 13

uvula

Question 14

The posterior boundary of the oral cavity is the

Answer 14

fauces or throat

Question 15

are in the lateral wall of the fauces

Answer 15

palatine tonsils

Question 16

a large, muscular organ that occupies most of the oral cavity proper when the mouth is closed.

Answer 16

tongue

Question 17

The anterior part of the tongue is relatively free, except for attachment to the floor of the mouth by a thin fold of tissue called____

Answer 17

lingual (tongue) frenulum.

Question 18

category of divided muscles associated with the tongue which within the tongue itself,

Answer 18

Intrinsic muscles

Question 19

category of divided muscles associated with the tongue which at outside the tongue but attached to it.

Answer 19

extrinsic muscles

Question 20

A groove called the___________ divides the tongue into two parts.

Answer 20

terminal sulcus

Question 21

Moist stratified squamous epithelium covers the tongue.

Answer 21

lingual tonsil

Question 22

(TRUE OR FALSE)

Answer 22

Adults normally have 32 teeth, which are distributed in two dental arches: the maxillary arch and the mandibular arch.

Question 23

(TRUE OR FALSE)
The teeth in each quadrant include one central and one lateral incisor, one canine, first and second premolars, and first, second, and third molars

Answer 23

true

Question 24

The teeth of the adult mouth

Answer 24

permanent teeth, or secondary teeth.

Question 25

Most of them are replacements for ____________, or primary teeth, also called milk teeth, which are lost during childhood

Answer 25

deciduous teeth

Question 26

(true or false) Each tooth consists of a crown with one or more cusps (points), a neck, and a root

Answer 26

true

Question 27

is the part of the tooth exposed in the oral cavity.

Answer 27

clinical crown

Question 28

is the entire enamel-covered part of the tooth.

Answer 28

anatomical crown

Question 29

center of the tooth which is filled with blood vessels, nerves, and connective tissue called pulp.

Answer 29

pulp cavity

Question 30

pulp cavity within the root

Answer 30

root canal

Question 31

nerves and blood vessels of the tooth enter and exit the pulp through a hole at the point of each root called ______________.

Answer 31

apical foramen

Question 32

The pulp cavity is surrounded by living, cellular, calcified tissue called_________.

Answer 32

dentin

Question 33

dentin of the tooth crown is covered by an extremely hard, nonliving, acellular substance called

Answer 33

enamel

Question 34

The surface of the dentin in the root is covered with a bonelike substance which helps anchor the tooth in the jaw.

Answer 34

cementum

Question 35

along the alveolar processes of the mandible and maxilla.

Answer 35

alveoli

Question 36

Dense fibrous connective tissue and stratified squamous epithelium cover the alveolar processes

Answer 36

gingiva

Question 37

secure the teeth in the alveoli.

Answer 37

Periodontal ligaments

Question 38

Food taken into the mouth

Answer 38

masticated, or chewed,

Question 39

Four pairs of muscles move the mandible during mastication

Answer 39

temporalis, masseter, medial pterygoid, and lateral pterygoid

Question 40

integrated in the medulla oblongata and controls the basic movements of chewing.

Answer 40

mastication reflex, or chewing reflex

Question 41

are scattered throughout the oral cavity.

Answer 41

salivary glands

Question 42

which are branching glands with clusters of acini resembling grapes

Answer 42

acinar glands,

Question 43

are serous glands, which produce mostly watery saliva; they are located just anterior to the ear on each side of the head.

Answer 43

parotid glands

Question 44

exits the gland on its anterior margin, crosses the lateral surface of the masseter muscle, pierces the buccinator muscle, and enters the oral cavity adjacent to the second upper molar

Answer 44

parotid duct

Question 45

most common type of viral infection results in_____

Answer 45

mumps

Question 46

are mixed glands with more serous than mucous acini.

Answer 46

submandibular glands

Question 47

the smallest of the three large, paired salivary glands, are mixed glands containing some serous acini but consisting primarily of mucous acini.

Answer 47

sublingual glands

Question 48

The salivary glands secrete a large amount of _______at the rate 1-1.5 L/day keeps the oral cavity moist which is needed for normal speech and for the suspension of food molecules in solution so they can be tasted; it begins the process of digestion; and it has protective functions.

Answer 48

saliva

Question 49

The serous part of saliva, produced mainly by the parotid and submandibular glands, contains a digestive enzyme called which breaks the covalent bonds between glucose molecules in starch and other polysaccharides to produce the disaccharides maltose and isomaltose

Answer 49

salivary amylase

Question 50

(TRUE OR FALSE) Saliva also contains lysozyme, an enzyme that has a weak antibacterial action, and immunoglobulin A, which helps prevent bacterial infection.

Answer 50

true

Question 51

mucous secretions of the submandibular and sublingual glands contain a large amount of______ a proteoglycan that gives a lubricating quality to the secretions of the salivary glands.

Answer 51

mucin