nasal and oral cavities

Question 1

roof of the nasal cavity

Answer 1

• frontal bone
• nasal bone
• cribriform plate of ethmoid bone
• body of sphenoid bone

Question 2

floor of the nasal cavity

Answer 2

hard palate:
- palatine process of the maxilla
- horizontal plate of palatine bone

Question 3

medial wall of the nasal cavity

Answer 3

nasal septum:
- perpendicular plate of ethmoid bone
- vomer bone
- cartilage

Question 4

lateral wall of nasal cavity

Answer 4

• maxilla bones
• lacrimal bones
• ethmoid bones
• inferior nasal conchae
• palatine bones
• sphenoid bones

Question 5

label nasal cavity

Answer 5

Question 6

paranasal sinuses (4)

Answer 6

• frontal
• sphenoid
• ethmoidal air cells
• maxillary

Question 7

where can the maxillary sinus be found

Answer 7

in the maxilla

Question 8

superior, inferior, and middle concha

Answer 8

Question 9

superior, inferior, and middle meatuses

Answer 9

Question 10

ethmoidal bulla

Answer 10

Question 11

semilunar hiatus

Answer 11

Question 12

where do the paranasal sinuses drain into in the nasal cavity

Answer 12

middle meatus

Question 13

where are the nasolacrimal ducts found

Answer 13

begins in the eye socket between the maxillary and lacrimal bones, from where it passes downwards and backwards

Question 14

nerve supply of the nasal walls

Answer 14

via branches of the olfactory [cranial nerve (CN) I], ophthalmic (CN V-1), and maxillary nerves (CN V-2)

Question 15

relations between the maxillary sinus and pathology of the maxillary sinus

Answer 15

the cold virus:
- pressure due to the membranes of nasal passages and sinuses being attacked
- nasal passages and sinuses swell up and send mucus production into overdrive (clogs up sinuses, causing sinus pain and pressure)

sinusitis (sinus infection):
- inflammation of the sinuses that can cause them to get blocked and filled with fluid
- caused by a cold

Question 16

oral cavity roof

Answer 16

• hard palate (palatine process of maxilla, horizontal plate of palatine bone)
• soft palate

Question 17

oral cavity floor

Answer 17

• tongue
• suprahyoid muscles (anterior belly digastric, mylohyoid, and geniohyoid)

Question 18

oral cavity medial wall

Answer 18

nasal septum:
- perpendicular plate of ethmoid bone
- vomer bone
- cartilage

Question 19

oral cavity lateral walls

Answer 19

cheeks

Question 20

intrinsic muscles of the tongue

Answer 20

• superior longitudinal muscle
• inferior longitudinal muscle
• transverse muscle
• vertical muscle

Question 21

superior longitudinal muscle

Answer 21

shortens, widens, and curls the tongue upwards (dorsiflexion)

Question 22

inferior longitudinal muscle

Answer 22

shortens, widens, and curls the tongue downwards (ventroflexion)

Question 23

transverse muscle

Answer 23

elongates and narrows the tongue

Question 24

vertical muscle

Answer 24

flattens the tongue

Question 25

extrinsic muscles of the tongue

Answer 25

• genioglossus muscle
• hyoglossus muscle
• styloglossus muscle
• palatoglossus muscle

Question 26

extrinsic v intrinsic muscles

Answer 26

• extrinsic: appear superficially
• intrinsic: appear deep near the axial and appendicular skeleton

Question 27

general sensation (anterior 2/3 of the tongue)

Answer 27

lingual nerve (mandibular nerve)

Question 28

special sensation (anterior 2/3 of the tongue)

Answer 28

chorda tympani nerve (facial nerve)

Question 29

general sensation (posterior 1/3 of the tongue)

Answer 29

glossopharyngeal nerve

Question 30

special sensation (posterior 1/3 of the tongue)

Answer 30

glossopharyngeal nerve

Question 31

lingual/mandibular nerve foramen

Answer 31

foramen ovale

Question 32

chorda tympani/facial nerve foramen

Answer 32

stylomastoid foramen

Question 33

glossopharyngeal nerve foramen

Answer 33

jugular foramen

Question 33

glossopharyngeal nerve foramen

Answer 33

jugular foramen

Question 34

innervation of the oral cavity

Answer 34

maxillary and mandibular divisions of the trigeminal nerve