Skull Flashcards

1
Q

the axial skeleton

A

80 bones
Consists of The skull,
vertebral column, thoracic cage

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2
Q

The skull

A

8 Cranial bones
enclose the cranial cavity and protects the brain
cranial vault (Calvaria)
Cranial base- anterior, middle, posterior cranial fossae

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3
Q

What is a suture?

A

where two bones align

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4
Q

Frontal bone

A

Anterior part of the cranium
protects brain
has most anterior fossa
contains air filled frontal sinus

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5
Q

Parietal bones

A

x 2
sides of the head - superior and lateral
has coronal, saggital, lambdoid, squamous sutures

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6
Q

Occipital bone

A

Posterior wall and cranial fossa
connects with first bones of spine
foramen magnum - hole where the spine connects
jugular foramen- cavity where nerves pass through and where temporal and occipital bones meet.

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7
Q

Temporal bones

A

x2
below and to the side (Inferolateral) aspects of the skull and parts of the cranial floor.
squamous
tympanic- around the ear
mastoid- jaw
petrous- inside head

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8
Q

Sphenoid bone

A

3 processes-
Greater wings -superior orbital fissure
Lesser wings- optic canal - optic nerve passes through to eyes
Pterygoid- connects the cranium floor to other bones

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9
Q

Ethmoid bone

A

Deepest skull bone
Superior part of the nasal septum, roof of nasal cavities
part of medial wall of orbits
Cribriform plate- tissue like structure allows smell to pass through

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10
Q

Fontanels

A

Unossified soft regions of the skull

Carniosynostosis - premature suture formation

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