TOPIC 4A - BONES OF NASAL CAVITY

Question 1

the roof of the nasal cavity (dorsum nasi) consists of?

Answer 1

os frontale (paired)
 os nasale (paired)

Question 2

the lateral walls of the nasal cavity consists of?

Answer 2

os lacrimale (paired)
os zygomatica (paired)
os maxilla (paired)
os incisivum (paired)

Question 3

the floor of the nasal cavity consists of?

Answer 3

os palatinum (paired)
os maxilla (paired)
os incisivum (paired)
unpaired vomer

Question 4

what separates the nasal and cranial cavity?

Answer 4

lamina cribrosa of ethmoid bone

Question 5

what divides the nasal cavity?

Answer 5

median septum nasale

Question 6

what does the ethmoidal turbinates form?

Answer 6

it continues rostrally and form conchae

Question 7

what does endoturbinate I form?

Answer 7

concha nasalis dorsalis

Question 8

what does endoturbinate II form?

Answer 8

concha nasalis media

Question 9

which concha nasalis does not come from the ethmoid bone?

Answer 9

concha nasalis ventralis

Question 10

what provides attachment for the concha nasalis dorsalis?

Answer 10

crista ethmoidales on the internal surface (facies interna) of the nasal bone

Question 11

where do the 2 nasal bones unite?

Answer 11

sutura plana

Question 12

what do the proc. rostrales of the nasal bone form?

Answer 12

apex of nasal bones

nasoincisive notch

Question 13

describe the apex for relevant species

Answer 13

Eq,Su,Ov - end centrally
Ca - ends laterally
Bo - separate apex for each bone

Question 14

What does the proc. septalis form in Ca?

Answer 14

part of the nasal septum

Question 15

what is between the nasal and incisive bones?

Answer 15

incisura nasoincisiva

Question 16

what are the paired frontal bones united by?

Answer 16

sutura interfrontalis

Question 17

what does the frontal bone enclose?

Answer 17

the frontal sinuses (number varies in species)

Question 18

list the parts of the frontal bone

Answer 18

frontal squama
pars nasalis (extends rostr.)
pars orbitalis
pars temporalis

Question 19

what structures does the frontal squama of frontal bone give?

Answer 19

proc. zygomaticus
fossa gl. lacrimales
proc. cornucles (Ru)

Question 20

what is pars orbitales of the frontal bone perforated by?

Answer 20

foramen ethmoidale

Question 21

what does pars temporalis of the frontal bone form?

Answer 21

the rostral part of fossa temporalis

Question 22

what does os zygomatica participate in?

Answer 22

paranasal sinus system

Question 23

what does os maxilla form?

Answer 23

maxillary sinus (paranasal sinus)

Question 24

what is attached to facies nasalis of os maxilla and what allows attachment?

Answer 24

crista conchalis for attachment of concha nasalis ventralis

Question 25

what does proc. palatinus of os maxilla form? (2)

Answer 25

hard palate with palatine palatine fissure with incisive bone

Question 26

what does the nasal surface of proc. palatinus of os maxilla form?

Answer 26

crista nasalis and vomer attaches

Question 27

what does the incisive bone form?

Answer 27

part of the opening to the nasal cavity | roof of hard palate

Question 28

what proc. does the incisive bone have?

Answer 28

proc. nasalis proc. palatinus proc. alveolar

Question 29

what are the 2 lamina of the palatine bone?

Answer 29

lamina horizontalis | lamina perpendicularis

Question 30

what does the lamina horizontalis form?

Answer 30

part of the hard palate

Question 31

what does the lamina perpendicularis of os palatinum form?

Answer 31

part of the dorsal and lateral walls of meatus nasopharyngeus and choanae

Question 32

Where does the vomer extend to?

Answer 32

extend from choanal region into nasal cavity where it attaches to crista nasalis

Question 33

what does the vomer form?

Answer 33

sulcus septalis that surrounds the nasal septum

Question 34

in which species is the crista ethmoidales 2 parts?

Answer 34

Eq - rostral and caudal part

Question 35

what are the main endoturbinates?

Answer 35

endoturbinate I, II, III , IV

Question 36

what are the smaller endoturbinates?

Answer 36

lateral and medial ones

Question 37

how many main endoturbinates in Ca?

Answer 37

4

Question 38

how many main endoturbinates in Ru?

Answer 38

4

Question 39

how many main endoturbinates in Eq?

Answer 39

6

Question 40

how many smaller endoturbinates in Ca?

Answer 40

6

Question 41

how many smaller endoturbinates in Ru?

Answer 41

18

Question 42

how many smaller endoturbinates in Eq?

Answer 42

25

Question 43

what is endturbinate II smaller than?

Answer 43

endoturbinate I

Question 44

in which species is the conchae nasalis dorsalis divided in two?

Answer 44

eq - caudal and rostral part