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Spinal > Sacrum > Flashcards

Sacrum Flashcards

1
Q

What is the typical number of segments that unite to form the adult sacrum?

A

5 segments

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2
Q

An imaginary line drawn along the dorsal midline of sacrum is IDed as the____?

A

Median sacral crest

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3
Q

What forms the median sacral crest?

A

Fused spinous processes and their spinous tubercles

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4
Q

An imaginary line drawn form the superior articular process of S1 to the sacral Cornu will form what feature?

A

Intermediate sacral crest

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5
Q

What forms the intermediate sacral crest?

A

Fuse articular processes and their facets

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6
Q

What features may be IDed along the intermediate sacral crest?

A

The mammillary process of S1 and the sacral Cornu of S5

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7
Q

What is the remnant of the inferior articular process and facet of S5?

A

The sacral Cornu

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8
Q

What is the name of the inferior opening of the sacral spinal Canal?

A

The sacral hiatus

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9
Q

An imaginary one drawn form the transverse process of S1 to the inferior lateral sacral angle will form what feature?

A

The lateral sacral crest

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10
Q

What forms the lateral sacral crest?

A

The used traverse processes and transverse tubercles from S1 to S5

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11
Q

What is the sacral tuberosity?

A

The enlarged transverse tubercle of S2

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12
Q

What feature is associated with the transverse tubercle of S5?

A

The inferior and lateral (inferolateral) sacral angle

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13
Q

From the anterior view, the intervertebral discs of sacrum will e replied by what feature?

A

Transverse ridges

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14
Q

What is the name given to the openings that rains it the ventral sacral nerve rami/

A

Anterior sacral foramina, ventral sacral foramina, or ventral pelvic foramina

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15
Q

What feature is IDed on the lateral surface of S1-S3?

A

Auricular surface

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16
Q

What feature does the anterior surface of the superior epiphyseal rim of S1 form?

A

The sacral promontory

17
Q

What is teh sacral promontory?

A

The buldging anterior surface of the superior epiphyseal rim of S1

18
Q

What is the name given to the region of bone extending laterally form the S1 vertebral body looking form the base view?

A

Sacral all

19
Q

What forms the sacral ala?

A

The costal element and true transverse process

20
Q

What part to eh sacral ala is derived from the costal element?

A

The anterior two-thirds

21
Q

What is the typical number of segments that unite to form the adult coccyx?

A

4 segments

22
Q

What bony features are present on the coccyx?

A

All segments are represented by a “vertebral body”; in addition, Co1 has a coccygeal Cornu and transverse process.

23
Q

What is the homolog of the superior articular process and facet on Co1?

A

Coccygeal Cornu

Spinal (47 decks)

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