Salivary Glands and Oral Tissues

Question 1

what type of epithelium in oral mucosa

Answer 1

stratified squamous epithelium

Question 2

what is the lamina propria of the oral mucosa like

Answer 2

dense CT

Question 3

what is the submucosa of the oral mucosa like

Answer 3

loose CT

Question 4

types of oral submucosa

Answer 4

lingual, masticatory and specialised

Question 5

what submucosa is associated with taste buds

Answer 5

specialised mucosa

Question 6

what is the name of the transition zone of the lips

Answer 6

vermillion border

Question 7

epithelium of the vermillion border

Answer 7

thick stratified squamous epithelium

Question 8

where is the hard palate formed

Answer 8

the anterior part of the roof of the mouth

Question 9

where is the soft palate

Answer 9

the posterior part of the roof of the mouth

Question 10

which palate is rugated

Answer 10

hard palate

Question 11

epithelium of the hard palate is

Answer 11

keratinized/para-keratinized stratified squamous type

Question 12

epithelium of the soft palate

Answer 12

non-keratinized squamous epithelium

Question 13

epithelium of the nasopharynx

Answer 13

ciliated pseudostratified columnar epithelium

Question 14

what cells are found in nasopharyngeal epithelium

Answer 14

goblet cells

Question 15

what supports the soft palate core

Answer 15

palatine skeletal muscle

Question 16

what glands sit near the oral surface

Answer 16

submucosal glands

Question 17

what glands lie near the nasopharyngeal side

Answer 17

mixed seromucous glands

Question 18

what papillae has no taste buds

Answer 18

filliform papillae

Question 19

What is the mucosa of the tongue made up of?

Answer 19

Keratinized stratified squamous epithelium

Question 20

Shape of fungiform papillae

Answer 20

Mushroom shaped

Question 21

Where are fungiform papillae found?

Answer 21

Near the tip of the tongue

Question 22

Shape of filiform papillae

Answer 22

Elongated cone shape

Question 23

What papillae are keratinized

Answer 23

Filiform papillae

Question 24

Shape of foliage papillae

Answer 24

Parallel ridges and furrows

Question 25

Largest papillae

Answer 25

Circumvillate papillae

Question 26

What empties into the furrows of circumvillate papillae

Answer 26

Ducts from Von ebner glands

Question 27

What do taste buds do

Answer 27

Transduce chemical stimuli into nerve impulses

Question 28

Structure of taste buds

Answer 28

Ovoid, 50 - 75 cells

Question 29

What is present at the apical end of the taste bud

Answer 29

A taste pore

Question 30

3 types of cell in a taste bud

Answer 30

Receptor cell, sustentacular cell, basal cell

Question 31

Lifetime of receptor and sustentacular cells

Answer 31

10 - 14 days

Question 32

Epithelium of posterior tongue

Answer 32

Smooth stratified squamous epithelium

Question 33

Lymphoid tissue of posterior tongue

Answer 33

Lingual tonsil

Question 34

What composes waldeyer's ring

Answer 34

Lingual tonsils, palatine tonsils and adenoids

Question 35

What are salivary glands

Answer 35

Exocrine glands of oral cavity

Question 36

How much saliva is secreted daily

Answer 36

700 - 1200 ml

Question 36

How much saliva is secreted daily

Answer 36

700 - 1200 ml

Question 37

What is saliva

Answer 37

Hypotonic

Question 38

Ph of saliva

Answer 38

Between 6.7 and 6.9

Question 39

Contents of saliva

Answer 39

Mucus, enzymes, antibodies and inorganic ions

Question 39

Contents of saliva

Answer 39

Mucus, enzymes, antibodies and inorganic ions

Question 40

Functions of saliva

Answer 40

Protection, buffering, tooth integrity, antimicrobial activity, digestion and taste

Question 41

Major salivary glands

Answer 41

Parotid, submandibular and sublingual

Question 42

Minor salivary glands

Answer 42

Palatine and lingual

Question 43

Structure of salivary glands

Answer 43

Compound tubuloacinar

Question 44

Parenchyma contents of salivary glands

Answer 44

Serous and mucous acini, duct system

Question 45

Stroma of salivary gland

Answer 45

Ct capsule with inward septa dividing the gland into lobes and lobules

Question 46

What travels in the ductal septae of salivary glands

Answer 46

Blood vessels, nerves and major ducts

Question 47

Classification of simple glands

Answer 47

Duct is unbranched

Question 48

Classification of compound glands

Answer 48

Gland has a branching duct system

Question 49

Classification of tubuloacinar glands

Answer 49

Gland has secretary tubules ending in acini

Question 50

What type of glands are salivary glands

Answer 50

Compound tubuloacinar glands

Question 51

Exocrine secretary mechanism

Answer 51

Merowine secretion

Question 52

What is merocrine secretion

Answer 52

Secretion by exocytosis

Question 53

Cells of serous acini

Answer 53

Wedge shaped with basal nucleus

Question 54

Cells of mucous acini

Answer 54

Cuboidal / columnar cells with compressed basal nucleus

Question 55

Serous demilune

Answer 55

Serous cells appear in a crescent shape at the end of the secretory unit

Question 56

Myoepithelial cells

Answer 56

Specialized cells found in the basal lamina of secretory units that contract to expel secretions from the acini

Question 57

Duct system of salivary glands

Answer 57

Secretory end pieces → intercalated ducts (simple cuboidal) → striated ducts (simple columnar) → interlobular ducts ( (pseudo) stratified cuboidal ; stratified columnar distally )

Question 58

Intercalated duct cell appearance

Answer 58

Cuboidal

Question 59

Striated duct appearance of cells

Answer 59

Columnar

Question 60

What do the striated ducts do

Answer 60

Pump Na+ ions out of the saliva against the gradient to produce hypotonic saliva

Question 61

Duct system of major salivary glands

Answer 61

Pseudostratified columnar / stratified cuboidal → stratified columnar → non-keratinized stratified squamous

Question 62

Secretions of parotid gland

Answer 62

Serous watery secretions with abundant amylase and proline rich proteins

Question 63

Secretions of submandibular gland

Answer 63

Secretions with abundant amylase and proline rich proteins and lysozyme and musigen

Question 64

Secretions of sublingual gland

Answer 64

Major secretary product is mucus but also secrete amylase and lysozyme

Question 65

Ratio of cells in parotid

Answer 65

All serous with equal excretory, striated and intercalated ducts

Question 66

Ratio of cells in submandibular

Answer 66

Mainly serous acini with more excretory and less intercalated ducts

Question 67

Ratio of cells in sublingual glands

Answer 67

Mainly mucus acini with mostly excretory and less striated ducts

Question 68

Where are lingual gland

Answer 68

Associated with the dorsal surface of the posterior tongue

Question 69

Where are minor sublingual glands found

Answer 69

Lower surface of tongue

Question 70

Where are labial glands found

Answer 70

Inner surface of the lips

Question 71

Where are the palatine glands

Answer 71

Submucosa of soft and hard palate

Question 72

Where are the buccal glands

Answer 72

Submucosa lining the cheeks

Question 73

What are Von Ebner's glands

Answer 73

Serous glands

Question 74

Where do vessels and nerves enter and branch

Answer 74

Enter at the hilum and branch within the CT septa

Question 75

What surrounds the secretory and ductal components

Answer 75

A rich vascular and nerve plexus

Question 76

What stimulates secretion of saliva

Answer 76

Autonomic nervous system

Question 77

Parasympathetic stimulation

Answer 77

Acetylcholine

Question 78

Sympathetic stimulation

Answer 78

Noradrenaline