10. Oral Cavity

Question 1

dense connective tissue and non-keratinized stratified squamous epithelium

surrounds neck of teeth and covers alveolar processes

Answer 1

gingivae

Question 2

anterior roof of mouth; bony shelf covered by dense CT tissue and non-keratizined stratified squamous epithelium

forms anterior 2/3 of roof of motuh; separates oral cavity from nasal cavity

Answer 2

hard palate

Question 3

orm part of anterior walls of oral cavity; covered with keratinized stratified squamous epithelium

close oral cavity from nasal cavity

Answer 3

lips

Question 4

3 pairs of large multicellular glands: parotid, sublingual, and submandibular

produce saliva

Answer 4

salivary glands

Question 5

posterior roof of mouth formed from skeletal muscle and covered with non-keratizined stratified squamous epothelium; uvula hangs from this structure

forms posterior 1/3 of roof of mouth; helps close off openng to nasopharynx when swallowing

Answer 5

soft palate

Question 6

hard structures projective from maxilla and mandible: incisors, canines, premolars, and molars

mastication

Answer 6

teeth

Question 7

composed primarily of skeletal muscle and covered by stratified squamous epithelium; surface covered by papillae

pushes food against palate to turn it into a bolus; detects taste (via taste buds)

Answer 7

tongue

Question 8

aggregates of partially encapsulated lymphatic tissue

detects antigens in swallowed food an drink and initiate immune response if necessary

Answer 8

tonsils

Question 9

space between cheek and gums

space where ingested materials are mixed with saliva and mechanically digested

Answer 9

vestibule

Question 10

small, conical, muscular projection extending from soft palate

assists solft palate in closing off entryway to nasopharynx when swallowing

Answer 10

uvula

Question 11

Characterize the anterior/posterior ends of the palate.

Answer 11

• anterior = hard and bony
• psterior = soft and muscular (skeletal)

Question 12

1. Where does the uvula extend?
2. How does it function?

Answer 12

1. Extends inferiorly from posterior part of soft palate
2. Swallowing: soft palate and uvula elevate to close opening of nasopharyx

Question 13

opening between oral cavity and oropharynx

Answer 13

fauces

Question 14

boundaries of the fauces

Answer 14

glossopalatine arch (anterior fold) and pharyngopalatine arch (posterior fold)

Question 15

Where are the palatine tonsils?

Answer 15

between the glossopalatine and pharyngopalatine arch

Question 16

Label structures.

Answer 16

Question 17

Label structures.

Answer 17

Question 18

cell type of tongue

Answer 18

skeletal muscle and lightly keratinized stratified squamous epithelium

Question 19

functions of the tongue

Answer 19

• manipulates/mixes ingested material during chewing
• compress partially digested materials against palate (to form bolus)
• role in swallowing

Question 20

globular mass of partially digested material

Answer 20

bolus

Question 21

inferior surface of tongue attaches to floor of oral cavity by thin vertical mucus membrane called ____

Answer 21

lingual frenulum

Question 22

small projects that cover the superior (dorsal) surface of the tongue

Answer 22

papillae

Question 23

posterior surface of the tongue contains ____

Answer 23

lingual tonsils

Question 24

fluid that assists in initial activities of digestion

Answer 24

saliva

Question 25

How much saliva is secreted in a day? When is it most produced?

Answer 25

* Between 1.0-1.5. daily * Most produced during meal time (small amounts continuously to ensure moist)

Question 26

99% of volume of saliva

Answer 26

water

Question 27

3 pairs of salivary glands

Answer 27

* parotid * submandibular * sublingual

Question 28

Label structures.

Answer 28

Question 29

largest salivary glands

Answer 29

**parotid glands** [located *anterior and inferior to ear overlying masseter muscle*] produce 25-30% saliva (through parotid duct to oral cavity ia oral vestibule next to 2nd upper molar)

Question 30

produces most of the saliva (60-70%)

Answer 30

**submandibular glands** [located *inferior to the body of the mandible*] duct opens from eah gland through papilla in the floor of the mouth on lateral sides of the *lingual frenulum*

Question 31

contribute only 3-5% of total saliva

Answer 31

**sublingual glands** [located *inferior to tongue and internal to the oral cavity mucosa*] extends multiple tiny sublingual ducts that open onto inferior surface of oral cavity, posterior to submandibular dut papilla

Question 32

types of secretions: parotid glands

Answer 32

serous secretions

Question 33

types of secretions: submandibular gland

Answer 33

mucous and serous secretions

Question 34

types of secretions: sublingual gland

Answer 34

both mucous and serous secretions

Question 35

dentition; responsible for ingestion and mastication (first part of mechanical digestion process)

Answer 35

teeth

Question 36

components of the tooth

Answer 36

* exposed crown * constricted neck * one or more roots that anchor it to the jaw

Question 37

dental alveoli

Answer 37

* sockets within alveolar processes of both maxillae and mandible * "roots of teeth fit into dental alveoli"

Question 38

gomphosis joint

Answer 38

* roots * dental alveoli * periodontal ligament

Question 39

binds teeth roots to the alveolar processes

Answer 39

periodontal ligament

Question 40

Label.

Answer 40

Question 41

teeth

Answer 41

Question 42

Label the teeth.

Question 43

Phases of swallowing

Answer 43

Question 44

Name components of alimentary layer.

Answer 44

Question 45

Label.

Answer 45

Question 46

Label.

Answer 46

Question 47

Label.

Answer 47

Question 48

Label.

Answer 48

Question 49

Alimentary layer of the cervical viscera

Answer 49

Question 50

tonsillectomy

Answer 50

Question 51

tenses soft palate and acts on pharyngotympanci tube for depressurizing middle ear

Answer 51

tensor veli palatini (CN V - V3)

Question 52

elevates the tensed palate and acts on pharyngotympanic tube

Answer 52

levator. veli palatini (CN X - pharyngeal plexus)

Question 53

paralysis of **tensor veli palatini** and **levator veli palatini**

Answer 53

leads to reflux of oral contents into nasal cavity and pharyngotympanic tube dysfunction

Question 54

anatomy of swallowing

Answer 54

Question 55

relational anatomy of pharynx

Answer 55