Digestive System Part 2

Question 1

Anterior opening of the oral cavity is called the _____

Answer 1

oral orifice

Question 2

What cells make up the walls of the oral cavity?

Answer 2

stratified epithelium

Question 3

the lips/labia are composed of fleshy ________ _______ muscle

Answer 3

orbicularis oris

Question 4

the cheeks are composed of what muscle

Answer 4

buccinator

Question 5

what is the oral vestibule?

Answer 5

the space between the lips/cheeks and the teeth

Question 6

What is considered the oral cavity proper?

Answer 6

Lies between the teeth and gums

Question 7

What comprises the hard palate?

Answer 7

The palatine bones and palatine processes

Question 8

What muscle makes up the soft palate?

Answer 8

skeletal muscle

Question 9

The uvula is an extension of the _____ ______ and closes ____________ during swallowing.

Answer 9

soft palate; nasopharynx

Question 10

What are the two arches in the oral cavity called? What is the space between them called and the tonsil between them?

Answer 10

palatoglossal arch and palatopharyngeal arch
space: fauces, palatine tonsil

Question 11

What do tonsils do?

Answer 11

produce mucous and saliva

Question 12

What are the functions of saliva?

Answer 12

• cleanse mouth
• dissolves food chemicals
• moistens food
• begins starch breakdown (amylase)

Question 13

What are the 4 structures of the tongue and the sulcus?

Answer 13

• filiform papillae
• fungiform papillae
• vallate papillae
• foliate papillae
  sulcus= terminal sulcus behind vallate

Question 14

What is the function of the tongue?

Answer 14

• taste
• move food around
• formation of bolus

Question 15

What are the 3 salivary glands? What cell type do each contain?

Answer 15

Parotid (serous)
Submandibular (serous)
Sublingual (mucus)

Question 16

There are 2 types of secretory cells. What are the two types and what do each of them secrete?

Answer 16

Serous : watery secretions, enzymes, ions, and bits of mucin
Mucus : produce mucous

Question 17

What is the function of incisors?

Answer 17

cutting

Question 18

What is the function of canines/bicuspids?

Answer 18

tearing

Question 19

What is the function of premolars?

Answer 19

grinding and crushing

Question 20

What is the function of molars?

Answer 20

best grinders

Question 21

What are the structures of the tooth?

Answer 21

Crown, Neck, Root
Pulp cavity, root canal, gingival sulcus
cement, periodontal ligament, dentin

Question 22

What are the structures of the tooth?

Answer 22

Crown, Neck, Root
Pulp cavity, root canal, gingival sulcus
cement, periodontal ligament, dentin

Question 23

What type of epithelium makes up the pharynx?

Answer 23

stratified squamous epithelium

Question 24

The pharynx is lined with _____ glands

Answer 24

mucous

Question 25

The inner muscle of the pharynx runs _____ while the outer muscles run _____.

Answer 25

longitudinally; circularly

Question 26

The pharynx is comprised of _____ muscle and is ________

Answer 26

skeletal; voluntary

Question 27

The function of the pharynx is to….

Answer 27

• allow passage of food, fluids, and air

Question 28

The esophagus runs from the ______ to the _______

Answer 28

laryngopharynx to the stomach (cardiac sphincter)

Question 29

Which sphincter protects from acid reflux

Answer 29

cardiac sphincter

Question 30

TRUE or FALSE:
The esophagus has all four alimentary canal tunics

Answer 30

TRUE