Digestive System & Associated Structures

Question 1

What are the 2 main parts of the oral cavity?

Answer 1

vestibule; oral cavity proper

Question 1

Outside the teeth and gums, but inside the lips and cheeks:

Answer 1

vestibule

Question 2

Oral cavity proper boundary: hard and rostral - most part of the soft palate.
a. dorsal
b. rostral/lateral
c. ventral
d. caudal

Answer 2

dorsal

Question 3

Oral cavity proper boundary: teeth and gums
a. dorsal
b. rostral/lateral
c. ventral
d. caudal

Answer 3

rostral/lateral

Question 4

Oral cavity proper boundary: tongue and associated mucosa
a. dorsal
b. rostral/lateral
c. ventral
d. caudal

Answer 4

ventral

Question 5

Oral cavity proper boundary: palatoglossal arch
a. dorsal
b. rostral/lateral
c. ventral
d. caudal

Answer 5

caudal

Question 6

The arch that goes around the back of the throat, connecting the tongue and palate:

Answer 6

hypoglossal arch

Question 7

“Short crown”

Answer 7

brachydont

Question 8

Exposed portion of a tooth, covered by enamel:

Answer 8

crown

Question 9

Part of the tooth that is below the gumline, covered by cement:

Answer 9

root

Question 10

Part of the tooth where the crown and root meet:

Answer 10

neck

Question 11

Contains the soft tissues of the tooth (sensory and autonomic nerves, vessels, etc.) and narrows with age:

Answer 11

pulp cavity/root canal

Question 12

Narrow opening where the nerves/ vessels enter/exit the roots of a tooth:

Answer 12

apical foramen

Question 13

Fibrous CT that anchors the tooth into the alveolus (socket):

Answer 13

periodontal ligament

Question 14

What is another word for “socket”?

Answer 14

alveolus

Question 15

The outer surface of a tooth is called the _____ surface.

Answer 15

vestibular

Question 16

The inner surface of a tooth, that is in closer contact with the tongue, is called the: _____ surface.

Answer 16

lingual/palatine

Question 17

The surfaces which face adjacent teeth in the same dental arch:

Answer 17

contact surfaces

Question 18

The _____ contact surface faces the caudal aspect.

Answer 18

mesial

Question 19

The _____ contact surface faces the rostral aspect.

Answer 19

distal

Question 20

This surface faces the opposite dental arch. It is the part of the crown that is coming into contact with food.
(hint - where cavities form in humans; “grinding surface”)

Answer 20

occlusal surface

Question 21

What is the adult canine dental formula?

Answer 21

(I 3/3 C 1/1 P 4/4 M2/3) x2

Question 22

There are fewer teeth in the _____ and _____ regions for a cat.

Answer 22

molar; premolar

Question 23

What is the deciduous canine dental formula?

Answer 23

(I 3/3 C1/1 P 3/3) x2

Question 24

_____ teeth are known as "shearing" teeth.

Answer 24

carnassial

Question 25

What are the carnassial teeth (name & #)?

Answer 25

upper premolar 4; lower molar 1

Question 26

The carnassial teeth tend to have more _____ because they need to be well anchored to handle force applied while shearing food.

Answer 26

roots

Question 27

What is the name of the system used to label teeth?

Answer 27

triadan system

Question 28

Based on the triadan system, what series do we have on the upper right? a. 100 b. 200 c. 300 d. 400

Answer 28

100

Question 29

Based on the triadan system, which series do we have on the upper left? a. 100 b. 200 c. 300 d. 400

Answer 29

200

Question 30

Based on the triadan system, which series do we have on the lower left? a. 100 b. 200 c. 300 d. 400

Answer 30

300

Question 31

Based on the triadan system, which series do we have on the lower right? a. 100 b. 200 c. 300 d. 400

Answer 31

400

Question 32

Which teeth can be extracted to determine an animal's age, based on rings?

Answer 32

premolars 105 and 205

Question 33

Which teeth does a dog have, but a cat is missing?

Answer 33

premolar #105; molars #410 and #411

Question 34

Which muscle is responsible for opening the jaw (lower)?

Answer 34

digastricus

Question 35

A muzzle opposes which muscle?

Answer 35

digastricus

Question 36

What are the 3 parts of the tongue?

Answer 36

apex; body; root

Question 37

Rostral part of the tongue. Free extremity.

Answer 37

apex

Question 38

Middle part of the tongue:

Answer 38

body

Question 39

Caudal 1/3 of the tongue. *Getting a pill here makes it more difficult for the animal to spit it out

Answer 39

root

Question 40

_____ papillae move ingesta from the oral cavity down to the esophagus.

Answer 40

mechanical

Question 41

What are the 2 types of mechanical papillae?

Answer 41

filiform; conical

Question 42

This kind of mechanical papillae are found on the body and apex of the tongue and fill in the "extra" space.

Answer 42

filiform

Question 43

This kind of mechanical papillae are found on the root of the tongue and tend to have keratinized spikes on them that are directed caudally.

Answer 43

conical

Question 44

_____ papillae are the taste buds.

Answer 44

gustatory

Question 45

What are the three types of gustatory papillae?

Answer 45

fungiform; vallate; foliate

Question 46

______ have enlarged, caudally-directed, hook-like filiform papillae. They are abrasive and are used to strip muscle off of bone.

Answer 46

cats

Question 47

The _____ muscles are skeletal muscles that are entirely within the tongue itself.

Answer 47

intrinsic

Question 48

The _____ muscles are skeletal muscles that extend from a bone to the tongue.

Answer 48

extrinsic

Question 49

The _____ is cartilage that is important as a stretch receptor in the tongue of carnivores.

Answer 49

lyssa

Question 50

This muscle is attached to the mandibular symphysis and ventral surface of the tongue.

Answer 50

genioglossus

Question 51

This muscle extends from the base of the hyoid to the tongue:

Answer 51

hyoglossus

Question 52

What are the 4 main salivary glands?

Answer 52

mandibular; sublingual; parotid; zygomatic

Question 53

What are the 2 subdivisions of the sublingual salivary gland?

Answer 53

monostomatic; polystomatic

Question 54

Salivary gland that comes from off the jaw:

Answer 54

mandibular

Question 55

Salivary gland that is located below the tongue:

Answer 55

sublingual

Question 56

Salivary gland that is found underneath the ear:

Answer 56

parotid

Question 57

This salivary gland is medial to the zygomatic arch and is more difficult to see:

Answer 57

zygomatic

Question 58

The ducts of the mandibular and monochromatic sublingual salivary glands course within the sublingual _____ to empty at the _____ _____.

Answer 58

fold; sublingual caruncle

Question 59

This duct crosses lateral surface of the masseter muscle to empty into vestibule at caudal margin of superior 4th premolar (upper carnassial):

Answer 59

parotid

Question 60

These ducts open into vestibule near the last molar:

Answer 60

zygomatic

Question 61

Passage that is common, in part, to both the digestive and respiratory systems

Answer 61

pharynx

Question 62

From the choanae to the palatopharyngeal arches: a. nasopharynx b. oropharynx c. laryngopharynx

Answer 62

nasopharynx

Question 63

Roof of the mouth:

Answer 63

choanae

Question 64

From the palatoglossal arches to the base of the epiglottis: a. nasopharynx b. oropharynx c. laryngopharynx

Answer 64

oropharynx

Question 65

Dorsal to the larynx, from the palatopharyngeal arches to pharyngoesophageal limen: a. nasopharynx b. oropharynx c. laryngopharynx

Answer 65

laryngopharynx

Question 66

Line at esophagus where pharynx ends and esophagus begins:

Answer 66

pharyngoesophageal limen

Question 67

These muscles aid in swallowing:

Answer 67

pharyngeal constrictor muscles

Question 68

These muscles are ______ ______ muscles. They push food and ingesta into the esophagus by contracting and forming the archway. -Hypopharyngeus m -Thyropharyngeus m -Cricopharyngeus m

Answer 68

pharyngeal constrictor