AXIAL SKELETON (EXAM1) Flashcards

1
Q

Major sutures of the skull

A

Coronal suture: between frontal and parietal bones

Sagittal suture: between right and left parietal bones

Lamdoid suture: between parietal bones and occipital bone

Squamous suture: between temporal and parietal bones

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2
Q

regions of vertebral column and the amount of vertebrae in each region

A

Cervical region: 7 vertebrae: C1-C7

Thoracic region: 12 vertebrae: T1-T12

Lumbar region: 5 vertebrae: L1-L5

Sacrum
-1 sacrum formed from fusion of five vertebrae (S1-S5)
(Fusion occurs by mid 20’s)

Coccyx (tailbone)
1 tailbone formed from 4 coccygeal (CO1-C04)
fusion occurs around age 25

SEE POWERPOINT

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3
Q

Define scoliosis

A

abnormal lateral curvature See powerpoint

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4
Q

Define kyphosis

A

exaggerated lumbar curvature (swayback) see powerpoint

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5
Q

Define lordosis

A

exaggerated thoracic curvature (hunchback)

see powerpoint

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6
Q

Know articulation points between occipital bone and atlas and between axis and atlas

A

Atlas (1st Cervical Vertebra) - Articulates with occipital condyle to make “ yes “ motion

Axis (2nd Cervical Vertebra) - Articulates with C1 to allow for “no” motion

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7
Q

Know parts of the intervertebral disc (annulus fibrosus and nucleos pulposus) and explains the condition of a ruptured disc

A

anulus fibrosus: outer ring of fibrocartilage

nucleus pulposus: gelatinous consistency in the middle

Condition of a ruptured disc:

  • Bulging disc or herniated disc caused by distortion of anulus fibrosus
  • Disc then bulges to push on nearby nerve
  • This cause discomfort
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8
Q

Identify true false and floating ribs

A

true ribs 1-7

false ribs 8-12

floating ribs 11-12

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9
Q

how do ribs articulate with a vertebra and sternum

A

vertebra:
•Costal facet or demifacets to articulate with tubercle and head of ribs
•each vertebra joins a rib

sternum:
•Articular costal notches: articulate with ribs 2-7

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10
Q

Function of foramen magnum (occipital bone)

A

exit for spinal cord

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11
Q

function of occipital condyles (occipital bone)

A

articulate with first cervical vertebra

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12
Q

function of inferior and superior nuchal lines (occipital bone)

A

attachment of muscle and ligaments to stabilize joint between occipital condyles and C1

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13
Q

function of jugular foramen (occipital bone)

A

internal jugular vein passes through

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14
Q

function of external occipital protuberance (occipital)

A

attachment of ligamentum nuchae

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15
Q

function of superior and inferior lines (parietal bone)

A

attachment of temporalis muscle

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16
Q

function of parietal eminence (parietal bone)

A

attachment of scalp to skull

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17
Q

function of frontal crest (frontal bone)

A

attachment of meninges to stabilize the brain

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18
Q

function of lacrimal fossa (frontal bone)

A

location of the lacrimal gland

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19
Q

function of superciliary arches (frontal bone)

A

support the eyebrows

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20
Q

function of supraorbital margin (frontal bone)

A

superior limit of orbit

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21
Q

function of zygomatic process of the frontal bone

A

where frontal bone meets zygomatic bone

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22
Q

function of hypoglossal canal (frontal bone)

A

passage way of hypoglassal nerve

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23
Q

function of zygomatic process (temporal bone)

A

extension that meets the zygomatic bone to form zygomatic arch

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24
Q

function of mandibular fossa and articular tubercle (temporal bone)

A

where the mandible meets the temporal bone to form the temporomandibular joint

25
Q

function of External acoustic meatus (temporal bone)

A

pathway for sound to travel to the eardrum

26
Q

function of Mastoid process (temporal bone)

A

attachment for sternocleidomastoid muscle

27
Q

function of Styloid process (temporal bone)

A

attachment for styloglossus muscle and ligaments of the hyoid bone

28
Q

function of Stylomastoid foramen (temporal bone)

A

exit point for facial nerve

29
Q

function of Carotid canal (temporal bone)

A

passageway for internal carotid artery (supplies blood to brain)

30
Q

function of Internal acoustic meatus (temporal bone)

A

carries blood vessels and nerves (vestibulocochlear nerve and facial nerve)

31
Q

function of Sella turcica (with hypophyseal fossa) (sphenoid bone)

A

house pituitary gland

32
Q

function of lesser wings (sphenoid bone)

A

support the frontal lobe of brain

33
Q

function of greater wings (sphenoid bone)

A

posterior aspects of orbit

34
Q

function of Superior orbital fissure (sphenoid bone)

A

passageway for blood vessels and cranial nerves of the eye

35
Q

function of Optic canal (sphenoid bone)

A

passageway for optic nerve (used for vision)

36
Q

function of Pterygoid process (sphenoid bone )

A

attachment for pterygoid muscles that move the mandible

37
Q

function of Formen rotundum, ovale and spinosum (sphenoid bone)

A

passageway for blood vessels and nerves to structures of orbit, face and jaw

38
Q

function of Cribriform foramina of the cribriform plate (ethmoid bone)

A

passage for olfactory nerve

39
Q

function of Crista galli (ethmoid bone)

A

attachment for falx cerebri (which stabilizes the brain)

40
Q

function of superior and middle nasal conchae (ethmoid bone)

A

disrupts movement of air in order to warm, humidify and cleanse it

41
Q

function of Perpendicular plate (ethmoid bone)

A

forms part of nasal septum

42
Q

function of Anterior cranial fossa (cranial fossae)

A

cradles frontal lobes of brain

43
Q

function of Middle cranial fossa (cranial fossae)

A

cradles temporal lobes of brain

44
Q

function of Posterior cranial fossa (cranial fossae)

A

supports the occipital lobes, cerebellum and part of brainstem

45
Q

function of Frontal process (maxillae)

A

articulates with frontal bone

46
Q

function of Alveolar process (maxillae)

A

contains upper teeth

47
Q

function of infraorbital foramen (maxillae)

A

passage for sensory nerve from the face

48
Q

function of Palatine process (maxillae)

A

forms most of the hard palate

49
Q

function of Incisive fossa (maxillae)

A

contains nerves to upper teeth

50
Q

function of Horizontal plate (palatine bone)

A

forms posterior portion of hard palate

51
Q

function of body (mandible)

A

contains the alveolar process which houses the lower teeth

52
Q

function of head (ribs)

A

articulates with the body of each thoracic vertebra

53
Q

function of Tubercle (ribs)

A

articulates with transverse process of each thoracic vertebra

54
Q

function of Costal groove (ribs)

A

path of nerves and blood vessels

55
Q

function of Body (shaft) (ribs)

A

extension of rib towards sternum

56
Q

function of angle (ribs)

A

marks where body begins curving towards sternum

57
Q

function of Manubrium (sternum)

A

meets the clavicles and the first rib

58
Q

function of Xiphoid process (sternum)

A

attachment for diaphragm and rectus abdominis

59
Q

function of body (sternum)

A

attachment for ribs 2-10