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2. HLTH 109 > Joints: back > Flashcards

Joints: back Flashcards

1
Q

classify joint: vertebral bodies

A

symphysis, secondary cartilaginous

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2
Q

articular surfaces: vertebral body joints

A
  • inferior/ superior surfaces of adjacent vertebrae, connected by fibrocartilaginous disc
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3
Q

function of vertebral body joints

A

weight bearing and strength

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4
Q

intervertebral discs: function

A
  • strong attachments btw bodies into semi rigid column
  • cont to ant wall of vertebral column
  • form ant-inferior 1/2 of ant wall of IV foramen
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5
Q

where is there no IV disc

A

btw C1 and C2

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6
Q

intervertebral discs: thickness

A
  • relatively thickest in cervical and lumbar

- IV disc are thicker anteriorly in these regions

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7
Q

intervertebral discs: consists of

A
  • anulus fibrosus

- nucleus pulposus

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8
Q

anulus fibrosus: features

A
  • outer part ring: concentric lamellae of fibrocartilage
  • fibres of lamellae at angle 60+˚
  • thinner posteriorly
  • vascularisation decreases centrally
  • sensory inn only in outer 1/3
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9
Q

nucleus pulposus: features

A
  • gelatinous central mass
  • this semifluid nature contributes to flexibility and resilience of VC
  • avascular
  • broader when compressed
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10
Q

list two main ligaments:

A
  • anterior longitudinal lig

- posterior longitudinal lig

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11
Q

ant longitudinal lig: features

A
  • broad strong band
  • connects anterolateral aspects of V bodies and IV discs
  • ant tubercle of C1 (and occipital bone) -> sacrum (pelvic surface)
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12
Q

ant longitudinal lig: function

A

prevents hyperextension of vertebral column

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13
Q

post longitudinal lig: features

A
  • narrower and weaker than ant long lig
  • within vertebral canal
  • post aspect of V bodies and IV discs
  • from C2 -> sacrum
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14
Q

post longitudinal lig: function

A

prevents hyperflexion of VC and helps prevent/ redirect herniation of nucleus pulposus

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15
Q

uncovertebral joints (clefts):

A
  • btw uncinate processes of bodies C3/4 - C6/7
  • inferolateral surfaces 0f bodies superior to them
  • have synovial fluid in them
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16
Q

zygapophyseal (facet) joints: classify

A
  • synovial plane
17
Q

zygapophyseal (facet) joints: articular surfaces

A
  • superior/ inferior articular processes
18
Q

zygapophyseal (facet) joints: features

A
  • thin fibrous capsule (esp cervical)

- bear some weight in cervical and lumbar regions

19
Q

list accessory ligaments (5) of intervertebral joints:

A
  • ligamenta flava
  • interspinous
  • supraspinous
  • nuchal
  • intertransverse
20
Q

ligamenta flava: features

A
  • joins adjacent vertebral lamina - broad band elastic ct
  • part of post wall of V canal
  • cervical: long thin broad
  • thoracic: thicker
  • lumbar: thickest
21
Q

ligamenta flava: function

A
  • preserve normal curvature of VC and assist with straightening of VC after flexing
22
Q

interspinous lig: features

A
  • connect adjoining spinous processes from root to apex

- thin, relatively weak

23
Q

supraspinous lig: features

A
  • connect apices fo spinous processes from C7-sacrum
  • merges superiorly w nuchal lig
  • strong, cordlike
24
Q

nuchal lig: features

A
  • thickened fibroelastic tissue
  • attached to ext occipital protuberance, post border of foramen magnum -> spinous processes of cervical vertebrae
  • strong, broad
  • muscles attachment C3-C5
25
Q

intertransverse lig: features

A
  • connect adjacemt transverse processes
  • cervical: scattered fibres
  • thoracic: fibrous cords
  • lumbar: thin and membranous
26
Q

list craniovertebral joints:

A
  • atlanto-occipital

- atlantoaxial

27
Q

atlanto-occipital joint: classify

A

synovial condyloid

28
Q

atlanto-occipital joint: articular surfaces

A
  • superior articular processes of C1 and occipital condyles (occ bone)
29
Q

atlanto-occipital joint: features and movement

A
  • thin, loose capsule

- flexion/ ext “yes”

30
Q

atlantoaxial joints: list joints

A
  • median

- 2 lateral

31
Q

atlantoaxial joints: median type

A
  • synovial pivot
32
Q

atlantoaxial joints: median articular surfaces

A
  • dens of C2, and ant arch of C1
33
Q

atlantoaxial joints: two lateral type

A
  • zyhapophyseal (synovial plane)
34
Q

atlantoaxial joints: movements

A
  • rotation

- “no”

35
Q

= cruciate lig:

A

transverse + longitudinal bands

36
Q

list other ligs: recap

A
  • ant/post atlanto-occiputal mem
  • transverse lig of atlas
  • superior/inf longitudinal bands
37
Q

other ligs:

A
  • alar lig
  • apical lig
  • tectorial membrane

2. HLTH 109 (29 decks)

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