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Anatomy 3 > TOPIC 4A - BONES OF NASAL CAVITY > Flashcards

TOPIC 4A - BONES OF NASAL CAVITY Flashcards

1
Q

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

A 
os frontale (paired)
 os nasale (paired)
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2
Q

the lateral walls of the nasal cavity consists of?

A 
os lacrimale (paired)
os zygomatica (paired)
os maxilla (paired)
os incisivum (paired)
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3
Q

the floor of the nasal cavity consists of?

A 
os palatinum (paired)
os maxilla (paired)
os incisivum (paired)
unpaired vomer
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4
Q

what separates the nasal and cranial cavity?

A

lamina cribrosa of ethmoid bone

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5
Q

what divides the nasal cavity?

A

median septum nasale

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6
Q

what does the ethmoidal turbinates form?

A

it continues rostrally and form conchae

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7
Q

what does endoturbinate I form?

A

concha nasalis dorsalis

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8
Q

what does endoturbinate II form?

A

concha nasalis media

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9
Q

which concha nasalis does not come from the ethmoid bone?

A

concha nasalis ventralis

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10
Q

what provides attachment for the concha nasalis dorsalis?

A

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

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11
Q

where do the 2 nasal bones unite?

A

sutura plana

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12
Q

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

A

apex of nasal bones

nasoincisive notch

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13
Q

describe the apex for relevant species

A

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

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14
Q

What does the proc. septalis form in Ca?

A

part of the nasal septum

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15
Q

what is between the nasal and incisive bones?

A

incisura nasoincisiva

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16
Q

what are the paired frontal bones united by?

A

sutura interfrontalis

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17
Q

what does the frontal bone enclose?

A

the frontal sinuses (number varies in species)

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18
Q

list the parts of the frontal bone

A

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

19
Q

what structures does the frontal squama of frontal bone give?

A

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

20
Q

what is pars orbitales of the frontal bone perforated by?

A

foramen ethmoidale

21
Q

what does pars temporalis of the frontal bone form?

A

the rostral part of fossa temporalis

22
Q

what does os zygomatica participate in?

A

paranasal sinus system

23
Q

what does os maxilla form?

A

maxillary sinus (paranasal sinus)

24
Q

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

A

crista conchalis for attachment of concha nasalis ventralis

25
Q

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

A

hard palate with palatine

palatine fissure with incisive bone

26
Q

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

A

crista nasalis and vomer attaches

27
Q

what does the incisive bone form?

A

part of the opening to the nasal cavity

roof of hard palate

28
Q

what proc. does the incisive bone have?

A

proc. nasalis
proc. palatinus
proc. alveolar

29
Q

what are the 2 lamina of the palatine bone?

A

lamina horizontalis

lamina perpendicularis

30
Q

what does the lamina horizontalis form?

A

part of the hard palate

31
Q

what does the lamina perpendicularis of os palatinum form?

A

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

32
Q

Where does the vomer extend to?

A

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

33
Q

what does the vomer form?

A

sulcus septalis that surrounds the nasal septum

34
Q

in which species is the crista ethmoidales 2 parts?

A

Eq - rostral and caudal part

35
Q

what are the main endoturbinates?

A

endoturbinate I, II, III , IV

36
Q

what are the smaller endoturbinates?

A

lateral and medial ones

37
Q

how many main endoturbinates in Ca?

A

4

38
Q

how many main endoturbinates in Ru?

A

4

39
Q

how many main endoturbinates in Eq?

A

6

40
Q

how many smaller endoturbinates in Ca?

A

6

41
Q

how many smaller endoturbinates in Ru?

A

18

42
Q

how many smaller endoturbinates in Eq?

A

25

43
Q

what is endturbinate II smaller than?

A

endoturbinate I

44
Q

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

A

eq - caudal and rostral part

Anatomy 3 (65 decks)

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