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Hannah Neuro > skull > Flashcards

skull Flashcards

1
Q

which bone makes the lateral wall of eye orbit

A

zygomatic

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2
Q

where is the glabella

A

on the frontal bone in between the 2 superciliary arches (eyebrow bones)

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3
Q

sagitall suture

A

between parietal bones

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4
Q

chewing involving significant lateral motions of the mandible
expansion of the brain and brain case

A

hominid characteristics

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5
Q

what passes in the lacrimal groove

A

nasolacrimal duct

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6
Q

14 cranial bones

mvm niplz

A 
unpaired
-mandible
-vomer
paired
-maxillae 
-nasal 
-inferior nasal conchae 
-palatine
-lacrimal 
-zygomatic
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7
Q

what forms the medial wall of the orbit

A

orbital plate

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8
Q

what exits through the supraorbital foramen (notch) and what cranial bone is it in

A

terminal branch of V1 –> supraorbital N.

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9
Q

squamous suture

A

between temporal and parietal

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10
Q

which pair of bones forms the bridge of the nose

A

nasal bone

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11
Q

lambdoid suture

A

between parietal and occipital

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12
Q

coronal sutures

A

between frontal and parietal

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13
Q

the perpendicular part of the ethmoid bone forms the

A

superior portion of the nasal septum

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14
Q

orbital convergence
postorbital bar
shortening of face
flexion of face relative to basicranium

A

primate characteristics

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15
Q

what is the passageway for the brainstem and numerous arteries and nerves (spinal accessory nerve)

A

foramen magnum

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16
Q

which bone holds the superior orbital fissure

A

sphenoid bone

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17
Q

what 7 bones make up the orbit

A
  1. frontal bone (superior portion)
  2. zygomatic bone (lateral and floor portion)
  3. lacrimal bone (medial)
  4. ethmoid bone (medial)
  5. maxilla (medial and floor)
  6. palatine bone (floor)
  7. sphenoid bone (posterior/lateral wall) )
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18
Q

8 cranial bones

A 
paired
-temporal 
-parietal 
unpaired
-occipital 
-sphenoid 
-ethmoid
-frontal
19
Q

describe the venous drainage for the brain

A

superior (and inferior) sagital sinus–> transverse sinus–> sigmoid sinus—> jugular veins–>IVC

20
Q

what exits the foramen spinosum

A

middle meningeal artery

21
Q

what bones make the posterior hard palate

A

palatine and medial maxilla bone

22
Q

which artery is most superficial at the pterion and is at high risk for injury and bleeding

A

middle meningeal A.

where sphenoid meet frontal meet temporal

23
Q

the ethmoidal labyrinth forms the ___

A

superior and middle nasal conchae

24
Q

what are the parasinal sinuses

A
  1. ethmoid
  2. maxillary
  3. sphenoid
  4. frontal

*drain in to nasal cavity

25
Q

what parts of the palatine bone contribute to bigger picture stuff

A

orbital process- makes medial orbital floor
perpendicular plate- makes lateral wall of nasal cavity
horizontal plate- posterior portion of the hard palate

26
Q

what is a metopic suture

A

a sagital suture in the center of the frontal bone due to improper fusion of the frontal bone (usually occurs at 9 months)
-persist suture is not significant but can appear as cranial bone fracture

27
Q

which bone makes the cribifrom plate

A

ethmoid bone

*cribiform foramina is passage for the olfactory nerve branches

28
Q

what bones make up the nasal complex

A
  1. nasal bone (bridge)
  2. lacrimal bone (nasolacrimal duct passage)
  3. inferior nasal concha
  4. ethmoid (superior and middle concha)
  5. palatine (lateral wall of septum)
  6. sphenoid ( superior wall of septum)
  7. vomer (inferior wall of septum)
29
Q

what does the axial skeleton refer to

A

skull
vertebra column
thoracic cage

30
Q

the zygomatic process from the ___ bone joins the ____ to form the ___

A

from the temporal bone joins the zygomatic bone to make the zygmoatic arch

31
Q

what are the 2 parts of the vomer bone and what are their functions

A
  1. ala
    -articulates with the sphenoid bone
  2. vertical plate
    -forms lower part of nasal septum
    (perpendicular plate of ethmoid makes superior nasal septum)
32
Q

which bone unites the cranial and facial bones

A

sphenoid bone

*articulates with almost every bone in skull

33
Q

what is the largest paranasal sinus in the skull

A

maxillary sinus in the maxilla bone

34
Q

the petrous part of the temporal bone protects ___

A

protects the inner ear

*is the hard part of the bone

35
Q

t/f during vertebrate skull evolution the fenestrae enlarged and the cranial vault enlarged

A

true

36
Q

what is the attachment for the falx cerebri on the ethmoid bone

A

crista galli

37
Q

what bone holds the optic groove (for the optic chasm) and the sella turcica (for the pituitary )

A

sphenoid bone

38
Q

where is the groove for the sigmoid sinus

A

inside the temporal bone

39
Q

what helps the fetal skull to exit the birth canal

A

fontanelles (allow skull to bend through the birth canal)

  1. anterior (largest and allows CSF to be extracted)
  2. sphenoid
  3. mastoid
  4. posterior
    * MAPS to the outside
40
Q

what bone holds the teeth of the upper jaw in place

A

maxilla bone (alveolar process)

41
Q

what are the 3 types of maxillary fractures

A
  • from a blow to the face
  • Le Fort 1: cracks alveolar process to knock off upper teeth
  • Le Fort 2: partially fractured through orbit and knocks off maxilla at the zygomatic maxillary suture
  • Le Fort 3: detaches upper portion of the face from the cranium
42
Q

the frontal crest is important bc

A

it is the attachment for the falx cerebri which is the protective connective tissue for the brain

43
Q

anterior protrusion of chin
development of the mastoid process
flexsion of the basicranium and retraction of the face
forehead replacing supraorbital tori

A

modern human traits

Hannah Neuro (20 decks)

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