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lumbar complex > Alternative Facts > Flashcards

Alternative Facts Flashcards

1
Q

Zygapophyseal Articular Progresses- what kind of joint? what do they do? and what direction do they face?

A

Superior Facet:face post/medially
Inferior Facet: face antero-laterally
TRUE SYNOVIAL JOINTS that restrain axial rotation & resist anterior shear

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2
Q

What is the transitional vertebra?

A

5th lumbar vertebra–superior discal surface is 5% greater

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3
Q

lamellae

A

collagen fibers of anulus fibrosis in concentric rings

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4
Q

what do intervertebral disks do

A

1.resist tensile force

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5
Q

what is shape of disk and why?

A

concave posteriorly for great cross section of anulus fibrosis posteriorly AKA ability to resist tension with forward bending

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6
Q

what is the lumbosacral angle

A

lumbo sacral articulation is 5th lumbar w/ 1st sacral. 1st sacral is inclined ant and inferior with horizontal.

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lumbar complex (3 decks)

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