Dental Anatomy (Muscles & Salivary Glands)

Question 1

How many Muscles of Mastication are there?

Answer 1

4

Question 2

What are the 2 primary muscles of mastication we need to know?

Answer 2

Temporalis Muscle & Masseter Muscle

Question 3

What are the 2 muscles of mastication we do not need to know so well?

Answer 3

Medial & Lateral Pterygoid

Question 4

What bone does the temporalis muscle attach to?

Answer 4

Coronoid Process

Question 5

Placing a finger in front of your ear and opening the mouth, which bone do we feel?

Answer 5

Condile

Question 6

Which dip forms between the Condile & Coronoid Process?

Answer 6

Sigmoid Notch

Question 7

What is the function of the Temporalis muscle?

Answer 7

Closes and pulls the jaw backwards

Question 8

What is the function of the Masseter muscle?

Answer 8

Closes the mandible

Question 9

Which bone is the Masseter muscle attached to?

Answer 9

Zygomatic arch (cheekbone)

Question 10

What do the Medial & Lateral Pterygoid muscle do?

Answer 10

Move jaw side to side

Question 11

Do we use muscles to open our mouthes?

Answer 11

No. Muscles keep the mouth closed

Question 12

Which muscle surrounding the eye, moves the eyelids?

Answer 12

Orbicularis Oculi

Question 13

Which muscle surrounding the mouth, moves the mouth/lips?

Answer 13

Orbicularis Oris

Question 14

Which muscle helps move food to the posterior of the mouth?

Answer 14

Buccinator Muscle

Question 15

What is the name for the bumps at the roof of the mouth, (that help the buccinator muscle move food?)

Answer 15

Rugae

Question 16

How many pairs of Salivary Glands do we have?

Answer 16

3 (Parotid, Submandibular, Sublingual)

Question 17

Which duct works with the Parotid Gland?

Answer 17

Stenson’s Duct

Question 18

Which Duct works with the Submandibular Gland?

Answer 18

Whartons Duct

Question 19

Which Duct works with the Sublingual Gland?

Answer 19

Bartholin/Rivinus Duct

Question 20

Which Gland is the biggest?

Answer 20

Parotid Gland (sits over the Ramus)

Question 21

Where is the Submandibular Gland situated?

Answer 21

Below the Sublingual Gland

Question 22

Where is the Sublingual Gland situated?

Answer 22

Behind lower anteriors

Question 23

How much Saliva does the Parotid Gland produce?

Answer 23

25%

Question 24

How much Saliva does the Submandibular Gland produce?

Answer 24

70%

Question 25

How much Saliva does the Sublingual Gland produce?

Answer 25

5%

Question 26

What happens when saliva hits plaque?

Answer 26

It Calcifies

Question 27

What percentage of Saliva, is water?

Answer 27

99% (99.5)

Question 28

What is 0.5% of saliva made up of?

Answer 28

Dissolved Substances

Question 29

What 4 Main dissolved substances make up 0.5% of saliva?

Answer 29

Proteins, Inorganic Ions, Antibodies, Enzymes (ptyalin)

Question 30

What do Enzymes in saliva do?

Answer 30

Break down food, aid in healing

Question 31

What makes saliva sticky?

Answer 31

Mucin (comes from proteins in saliva)

Question 32

What causes caries?

Answer 32

Bacteria + Sugar [= Acid]

Question 33

What drops when bacteria and sugar combine in the mouth, and can cause demineralisation, (leading to caries)

Answer 33

PH level drops due to acid

Question 34

What can help remineralise teeth?

Answer 34

Minerals

Question 35

What is the name of the ‘Action’ that neutralises the mouth, and balances PH?

Answer 35

Buffering Action

Question 36

What is the name of the small cyst that can be caused by saliva build up/duct blockage?

Answer 36

Mucocele

Question 37

What gland swelling can cause mumps?

Answer 37

Parotid Gland