Histology Of The Tongue, Salivary Glands, And Esophagus

Question 1

Functions of the tongue

Answer 1

Mixing food
Taste
Speech

Question 2

Tongue

Answer 2

Richly vascularized and inner gated mass of muscles enclosed in a mucosal layer of stratified squamous epithelium

Question 3

Lingual tonsils

Answer 3

Root of tongue

Question 4

Lingual papillae

Answer 4

Mucosal projections on the dorsal surface

Question 5

Type of muscle in tongue

Answer 5

Visceral striated muscle

Question 6

4 types of lingual papillae

Answer 6

Filiform
Fungiform
Circumvallate
Foliate

Question 7

Filliform papillae

Answer 7

Smallest, most numerous
Keratinized tip
Lack taste buds

Question 8

Fungiform papillae

Answer 8

Mushroom shaped red nodules
Contain taste buds on dorsal surface
On the margin of the tongue

Question 9

Circumvallate papillae

Answer 9

In front of sulcus terminalis
Dome shaped
Have Ember’s glands that drain into invaginations ‘
numerous taste buds

Question 10

Foliate papillae

Answer 10

Not abundant in human
Contain taste buds

Question 11

Taste buds

Answer 11

Oval pale bodies that extend into thick epithelium

Present on Fungiform, Circumvallate, foliate papilla

Question 12

3 cellular structures of states buds

Answer 12

Neuroepithelial cells
Supporting cells
Basal cells

Question 13

Undersurface of the tongue is covered by

Answer 13

Stratified squamous epithelium nonkeratinized

Question 14

Major salivary glands surrounded by a capsule

Answer 14

Parotid
Submandibular
Sublingual

Question 15

Which nervous system produces saliva

Answer 15

Autonomic nervous system

Question 16

Saliva is antibacterial because it has three things

Answer 16

• Lysozyme, which attacks the walls of bacteria
• Lactoferrin, which chelates iron necessary for bacterial growth
• S IgA which neutralizes bacteria and viruses

Question 17

Digestive function of saliva

Answer 17

Amylase and lingual lipase

Question 18

3 features of salivary glands

Answer 18

Secretory units
Acini
Excretory ducts

Question 19

The secretory portions of the salivary gland are composed of

Answer 19

-serous acini
-mucous acini
-mixed serosa-mucinous acini
Myoepithelial cells

Question 20

What do serous acini cells secrete

Answer 20

Protein

Question 21

Function of mucous acini

Answer 21

Synthesize and store mucus in mucinogen granules

Question 22

Function of myoepithelial cells

Answer 22

They contract to secrete products

Question 23

Intercalated ducts

Answer 23

Secretory acini empty into these ducts
Secrete HCO3- and absorb Cl-

Question 24

Striated ducts

Answer 24

Reabsorption of Na+ and secretion of K+ and HCO3-

Question 25

3 excretory ducts

Answer 25

Interlobular Interlobar duct ,main duct

Question 26

Parotid gland cells

Answer 26

Serous cells

Question 27

Parotid gland secrete

Answer 27

Secrete abundant a-amylase that initiates hydrolysis of carbohydrates and proline-rich proteins with antimicrobial and other protective properties

Question 28

Submandibular gland cells

Answer 28

Serous mixed with mucous acini

Question 29

Submandilbular glands secrete

Answer 29

Alpha amylase, proline-rich proteins, lysozyme

Question 30

Sublingual gland cells

Answer 30

Mixed serous and mucus cells BUT MAINLY MUCUS CELLS

Question 31

Main product of sublingual glands

Answer 31

Mucus

Question 32

Mucosa

Answer 32

lining epithelium • underlying CT (lamina propria) • smooth muscle (muscularis mucosae)

Question 33

Submucosa

Answer 33

Dense irregular CT

Question 34

Muscularis

Answer 34

Inner circular and outer longitudinal muscle layers

Question 35

Adventitia

Answer 35

CT where the wall of the tube is directly attached to adjoining structures

Question 36

Serosa

Answer 36

Membrane of mesothelium,and a small amount of underlying CT

Question 37

Functions of esophagus

Answer 37

Peristalsis to move food down

Question 38

Mucosa of esophagus

Answer 38

Nonkeratinized stratified squamous epithelium Diffuse lymphatic tissue

Question 39

Submucosa of esophagus

Answer 39

Dense irregular connective tissue Has lymphatic tissue and lymphatic nodules Meissner’s plexus

Question 40

Muscularis externa in esophagus

Answer 40

Auerbach’s plexus

Question 41

Muscularis

Answer 41

Striated part is innervated by somatic motor neurons Smooth muscle is innervated by visceral motor neurons

Question 42

Adventitia

Answer 42

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