Saliva and Salivary Glands

Question 1

What are the three main Salivary Glands?
What % of salivary flow are they responsible for?

Answer 1

Parotid, Submandibular, Sublingual glands
80%

Question 2

What produces 20% of saliva?
Where are these found?

Answer 2

Minor salivary glands
Submucosa of Oral mucosa

Question 3

Two types of epithelial tissue in salivary glands?

Answer 3

Acinar cells
Ducts

Question 4

What do Acinar cells do?

Answer 4

Produce fluid for saliva

Question 5

What allows the transport of fluid and electrolytes in salivary glands?

Answer 5

Channels and transporters in the apical and basolateral membranes

Question 6

Two types of Acinar cells?

Answer 6

Serous acinus and Mucous acinus

Question 7

What does the Serous acinus do?

Answer 7

Secretes water + amylase

Question 8

What type of acinus does the Parotid gland contain?

Answer 8

Serous acini

Question 9

What type of Acinus cells are in the Submandibular and Sublingual glands?
What is the name for this?

Answer 9

Both Serous and Mucousa Acinus
Seromucous

Question 10

Two types of Ducts in Salivary glands?

Answer 10

Intralobular and main excretory

Question 11

Two types of Intralobular ducts?

Answer 11

Striated and Intercalated

Question 12

What do Intercalated ducts do in the Salivary glands?

Answer 12

Connect Acini to larger striated ducts

Question 13

What is the function of Striated ducts in the salivary glands?

Answer 13

Reabsorption of NaCl

Question 14

What is Primary saliva made up of?

Answer 14

NaCl rich isotonic plasma-like fluid secreted by acini

Question 15

What do the Ducts secrete and reabsorb?

Answer 15

Secrete K+ and HCO3-
Reabsorb Na+ and Cl-

Question 16

What does the Epithelium of Duct do that makes Final saliva Hypotonic (Less tension)?

Answer 16

Doesn’t allow the movement of water

Question 17

Where do the Parotid glands lie?

Answer 17

Superificialy between the Zygomatic arch, Sternocleidomastoid and Ramus of Mandible

Question 18

What is the name of the Parotid duct?
Where does it lie?

Answer 18

Stenson’s duct
Crosses masseter, Pierces buccinator and enters oral cavity at 7/7

Question 19

What is the Buccinator muscle?

Answer 19

Muscle lining the cheek

Question 20

What are the 4 structures that pass through the parotid gland?

Answer 20

External carotid artery and terminal branches
Retromandibular vein
Facial nerve + branches
Parotid capsule

Question 21

Horizontal structure of Parotid gland?

Answer 21

Triangular

Question 22

What are the two lobes that make up the Submandibular gland?
What separates the two lobes?

Answer 22

Superficial lobe and deep lobe (Floor of mouth
Mylohyoid muscle

Question 23

Name of submandibular duct and where it empties into the oral cavity?

Answer 23

Whartons duct
Sublingual papillae

Question 24

Where does the Submandibular duct begin?

Answer 24

Superficial lobe

Question 25

Where are the sublingual glands located?

Answer 25

Between Mylohyoid muscle and oral mucousa of the floor of the mouth

Question 26

Where does the Sublingual gland drain into? Why?

Answer 26

Drains into submandibular Has no large duct

Question 27

Where are the Minor salivary glands concentrated?

Answer 27

Buccal labia palatal Lingual regions

Question 28

What types of acinus are Minor salivary glands? Which one is different?

Answer 28

All minor salivary glands are mucous Glands of Von ebner - Serous

Question 29

What does innervation of sympathetic and parasympathetic glands cause in the Salivary glands? (both do different things)

Answer 29

Parasympathetic- Production of saliva Sympathetic- Secretion of protein and glycoprotein

Question 30

What nerve sends parasympathetic fibers to: 1)Parotid gland 2)Submandibular and sublingual

Answer 30

1)Glossopharyngeal nerve 2)Chorda tmpani (branch of facial nerve)

Question 31

What does sympathetic nerves innervate the 1)Parotid gland 2)Sublingual and submandibular glands

Answer 31

1)Auriculo-temporal nerve 2)Lingual nerve branch of facial nerve

Question 32

3 functions of Saliva

Answer 32

Oral hygeine Maintaining oral pH Digestive enzyme

Question 33

Flow rate of saliva ml/min? Daily secretion?

Answer 33

0.3 to 7ml 800-1500ml

Question 34

3 defence systems of oral cavity?

Answer 34

Mucousa Palatine tonsils Salivary glands

Question 35

Which glands are constantly active?

Answer 35

Submandibular(dominates), sublingual and minor glands

Question 36

Which gland is the main source of secretion when stimulated?

Answer 36

Parotid