Oral cavity

Question 1

Answer 1

Question 2

Answer 2

Question 3

Where is the parotid duct opening?

What part of the oral cavity is this?

Answer 3

Upper 2nd molar.

vestibule.

Question 4

What are the two compartments of the oral cavity?

Answer 4

Vestibule: Outside the teeth but inside the lips.

Oral cavity proper: inside the arches of the teeth.

Question 5

What is the other name for the opening of the mouth?

Answer 5

Oral fissure.

Question 6

Which ducts open into the oral cavity proper?

Answer 6

Submandibular and sublingual.

Question 7

What two tissues will help food stay in between the teeth for mastication?

Answer 7

Buccinator and tongue.

Question 8

Answer 8

Question 9

Answer 9

Question 10

Roof, floor and exit of the oral cavity proper?

Answer 10

Question 11

How much of the palate is hard vs soft?

Answer 11

Anterior 2/3 is hard. Posterior 1/3 is soft.

Question 12

Answer 12

Question 13

Which bones form the hard palate?

Answer 13

maxilla, palatine and sphenoid.

Question 14

What are these two structures in the soft palate?

Answer 14

Question 15

What is the purpose of palatine rugae? What happens as you travel more posterior from the rugae?

Answer 15

help keep the food in the mouth while it is being processed.

Travel more posterior it becomes softer and more slippery which helps it slide down

Question 16

Answer 16

Question 17

What is the palatine apenurosis?

What attaches to it and what is their function?

Answer 17

Palatine aponeurosis (key feature of soft palate) is tendinous fibres.

There are then muscles which attach to this aponeurosis:

Tensor palati: provide tension in the palate so the other muscels can act, this also attaches to the auditory tube which helps unblock the ears.

Levator palati: elevate soft palate.

Platopharyngeus inserts into the pharyngeas (which isnerts into the pharynx).

Question 18

Answer 18

Palatoglossus comes from under the tongue and inserts into the palate.

Musculus uvulae inserts into the uvulae (least important.

Question 19

What are in between the two arches here?

Answer 19

palatine tonsils

Question 20

What are the two parts to the tongue? How big are they?

Answer 20

Question 21

Answer 21

Fungiform papillae are more laterally and have taste buds.

Centrally are filiform papillae (carpet like).

Septum going down the middle.

Filiform hold the food against the teeth.

Question 22

What are the intrinsic muscle layers of the tongue (from superior to inferior)?

Answer 22

Superior longitudinal, vertical, transverse, inferior longitidinal.

Question 23

Answer 23

Question 24

What is the muscle of the floor of the mouth?
Where does it run too and from?

Answer 24

Mylohyoid muscle, to and from mandible to hyoid bone.

Question 25

Which two muscles can adjust where the hyoid bone is?

Answer 25

Mylohyoid and geniohyoid muscle

Question 27

What is the function of the salivary glands?

Answer 27

Question 28

Which gland is this? What muscle is it external to? What muscle does the duct pierce? Where in the oral cavity does it go to?

Answer 28

Parotid external to masseter. Mumps will cause swelling of parotid gland. Parotid duct goes over masseter. Pierces into buccinator and then enters the vestibule next to the 2nd upper molar.

Question 29

Answer 29

Sublingual gland and submandibular gland

Question 30

What are these glands?

Answer 30

Question 31

The horseshoe shaped ________ gland sits on the posterior edge of the __________ muscle.

Answer 31

submandibular gland, mylohyoid muscle

Question 32

The __________ muscle allows you to stick your tongue out. It sits on top of the _________ muscle.

Answer 32

Genioglossus, geniohyoid muscle

Question 33

The _________ muscle goes from the hyoid \_\_\_\_\_\_\_\_\_to the tongue

Answer 33

hyoglossus, laterally

Question 34

\_\_\_\_\_\_\_\_\_\_\_\_\_\_ comes from the ____ process and inserts into the tongue

Answer 34

Styloglossus, styloid process

Question 35

Answer 35

The duct of the submandibular gland goes over the top of the sublingual gland to open as shown. This person has a stone which is obvious where the opening is. Often the opening is not as obvious.