Skull Flashcards

1
Q

Skull

A

cranium+mandible

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2
Q

2 parts of the cranium

A

neurocranium
viscerocranium

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3
Q

Neurocranium

A

the bony covering of the brain and its meninges
contains proximal parts of cranial nerves and vasculature of the brain

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4
Q

Calvarium

A

skull cap

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5
Q

Basicranium

A

cranial base

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6
Q

8 bones united by sutures

A

frontal
ethmoid
sphenoid
occipital
parietals
temporals

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7
Q

Viscerocranium

A

bones of the facial skeleton
forms the anterior part of the cranium
consists of bones that surround the mouth, nose, and most of the orbits

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8
Q

15 bones of the viserocranium

A

mandible
ethmoid
vomer
maxillae
inferior nasal conchae
zygomatics
palatines
nasals
lacrimals

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9
Q

Frontal bone

A

forms the forehead, roofs of the orbits, superciliary arches superior to the orbital apertures
contains frontal paranasal sinuses

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10
Q

Parietal bones

A

form the superior and lateral parts of the skull

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11
Q

coronal suture

A

runs in the coronal plane
located anteriorly where the parietal bone meets the frontal bone

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12
Q

Squamous suture

A

occurs where each parietal bone meets a temporal bone inferiorly

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13
Q

Sagittal suture

A

occurs where the right and left parietal bones meet superiorly in the midline of the

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14
Q

Lambdoid suture

A

occurs where the parietal bones meet

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15
Q

Sutural bones

A

small bones that occur within sutures

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16
Q

occipital bone

A

forms the posterior portion of the cranium and cranial base

17
Q

foramen magnum

A

located at the base of the occipital bone

18
Q

occipital condyles

A

articulate with C1 vertebra

19
Q

Nuchal lines

A

anchor muscles of the back and neck

20
Q

Temporal bones

A

lie inferior to the parietal bones
Form the inferolateral region of the skull and parts of the cranial floor

21
Q

Sphenoid bone

A

spans the width of the cranial floor
situated between the bones of the cranial vault and those of the face
greater wings
lesser wings

22
Q

Ethmoid bone

A

a light spongy bone that lies between the nasal and sphenoid bones
forms most of the medial bony region between the nasal cavity and orbits

23
Q

Crista galli

A

anchor point for dura mater

24
Q

Mandible

A

largest and strongest facial bone

25
Q

Mandible horizontal body

A

anchors the lower teeth and forms the chin

26
Q

Mandible two upright rami

A

project superolaterally from the body, mandibular angle

27
Q

Coronoid process

A

provides an insertion for the temporalis

28
Q

Mandibular condyle

A

articulates with the temporal bone to form the temporomandibular joint

29
Q

Maxillary bones

A

contains maxillary sinuses
form the upper jaw and central part of the facial skeleton
hold the tooth roots and form most of the nasal aperture and floor

30
Q

zygomatic bones

A

form the lateral wall of the orbits and prominences of the cheeks

31
Q

Nasal bones

A

form the bridge of the nose

32
Q

Lacrimal bones

A

delicate bones located in the medial orbital walls

33
Q

Palatine bones

A

lie posterior to the maxillae and complete the posterior part of the hard palate

34
Q

Vomer

A

a slender bone that lies in the nasal cavity and forms the inferior part of the nasal septum

35
Q

Inferior nasal conchae

A

thin, curved bones that project medially from the lateral walls of the nasal cavity

36
Q

Postnatal skull growth

A

at birth, the bones of the calvarium ossify outward from their centers of ossification and the bones are connected to one another by fibrous membranes

37
Q

Fontanelles

A

allow for skull compression during childbirth and brain expansion during postnatal growth

38
Q

Synchondroses

A

immovable, cartilaginous joints between bones of the skull base

39
Q
A