Skull (Lateral view) Flashcards

1
Q

Skull (# of bones)

A

22 bones
8 Cranial Bones
14 facial bones

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2
Q

Cranial Bones

A
1 - Frontal Bone
2 - Parietal Bones
2 - Temporal Bones 
1 - Occipital Bone
1 - Sphenoid Bone
1 - Ethmoid Bone
Protect the brain and sensory organs (vision, hearing, balance, and smell)
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3
Q

Embyrological Frontal bone

A

Is actually two parts instead of one, but may remain two even as an adult

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4
Q

Mandible

A

Lower jaw that is freely movable

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5
Q

Coronal Sutures

A

located in the coronal plane btwn the frontal and parietal bones

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6
Q

Lambdoidal Suture

A

btwn parietal and occipital bones,

Lamda = triangle shape

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7
Q

Squamosal Suture

A

Btwn the parietal and temporal bones

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8
Q

Zygomatic bones

A

Cheek bones unite temporal bones with maxillae bones

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9
Q

Maxillae or maxillary bone

A

Of the upper jaw

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10
Q

Zygomatic arch

A

Formed by the union of the zygomatic and temporal bones

Provide strong attachment of muscles of the jaw

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11
Q

Condyle

A

of the mandible unites with the temporal bone

Form temproromandibular Joint (TMJ)

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12
Q

Coronoid Process

A

of the mandible

Powerful temporalis muscle of the skull attach, acting to close the jaw

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13
Q

Sinuses

A

Air cavities
Found in the mastoid process of the temporal bone, maxillary bones, frontal, sphenoid, and ethmoid bones = risk of infection here

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14
Q

Styloid Porcess of the Temporal Bone

A

Long slender, pen-like projection of bone

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15
Q

External Aduitory Meatus

A

Is the opening in the temporal bone for the transmisssion of sound waves to the tympanic membrane (ear drum)

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16
Q

Auditory ossicles

A

Malleus, incus and stapes

17
Q

Lacrimal Bones

A

two

include passageway of the nasolacrimal duct carrying tears to the nasopharynx

18
Q

Nasal bones

A

Paired

form the bridge of the nose, attached with elastic cartilage forming the nose tip.

19
Q

Hyoid bone

A

Unique, suspended within the muscles of the tongue