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Spinal Anatomy Exam 2 > Sacrum > Flashcards

Sacrum Flashcards

1
Q

What part of the sacral ala is derived from the costal elements?

A

Anterior 2/3

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2
Q

What part of the sacral ala is derived from the ture transverse process?

A

Posterior 1/3

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3
Q

How many fibrous syndesmosis joint surfaces are present on the S1 vertebral body?

A

FOUR

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4
Q

How many joint surfaces are present on the vertebral body of the first sacral segement?

A

FIVE

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5
Q

How many cartilaginous symphysis joint surfaces are present on the S1 vertebral body?

A

ONE

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6
Q

How many fibours syndesmosis joint surfaces are present on the S1 vertebral body?

A

FOUR

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7
Q

What muscle may attach to the first sacral vertebral body?

A

Psoas major

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8
Q

What is the position of the sacral zygapophysis in adults?

A

The zygapophysis lies in the coronal plane for L5/S1

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9
Q

What is the orientation of the first sacral superior articular facet?

A

Backward, upward, medial (BUM)

Typically concave

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10
Q

What is the name given to the projection on the first sacral superior articular process?

A

Mammillary process

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11
Q

What muscles will attach to the sacral mammillary processes?

A

Multifidis

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12
Q

What is the usual conditions for the first sacral spinous process?

A

It is non-bifid and short

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13
Q

AN imaginary line drawn along the dorsal midline of sacrum is identified as the….

A

Median sacral crest

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14
Q

What is the name given to the congenital condition in which the 5th lumbar spinous process is elongated, the sacrum exhibits spina bifida, and dorsiflexion produces pain?

A

Knife Clasp Syndrome

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15
Q

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

A

Intermediate sacral crest

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16
Q

What features may be identified along the intermediate sacral crest?

A

The mammillary process of S1 and the sacral cornu of S5

17
Q

What does the sacral cornu represent?

A

The inferior articular process and facet of S5

18
Q

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

A

Sacral hiatus

19
Q

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

A

The lateral sacral crest

20
Q

What is the sacral tuberosity?

A

The enlarged transverse tubercle of S2

21
Q

What is the name of the joint formed by the sacral tuberosity?

A

The accessory sacro-iliac joint

22
Q

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

A

Auricular surface

23
Q

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

A

Sacral promontory

24
Q

The continuation of the posteior longitudinal ligament below S3 forms what ligament?

A

Deep posterior sacrococcygeal ligament

25
Q

What forms the posterior boundary for the 5th sacral spinal nerve intervertebral foramen?

A

Sacral cornu
Coccygeal cornu
Superficial posterior sacrococcygeal ligament
Intercornual ligament

26
Q

What forms the anterior boundary for the 5th sacral spinal nerve intervertebral foramen?

A

Vertebral body S5
Vertebral body Co1
Deep posterior sacrococcygeal ligament
Intervertebral disc

27
Q

What forms the inferior boundary for the spinal canal?

A

The union of the superficial posterior and deep posterior sacrococcygeal ligaments

28
Q

What ligament divides the sciatic foramen into the greater and lesser sciatic foramina?

A

Sacrospinous ligament

29
Q

Which ligament has a broad attachment along the lateral margin of sacrum and coccyx and then attaches to the ischial tuberosity?

A

Sacrotuberous ligament

30
Q

Which ligament is the strongest of the sacro-iliac ligaments and is penetrated by dorsal rami of the sacral spinal nerves?

A

Interosseous sacro-iliac ligament

31
Q

What is the homolog for the capsular ligament at S5?

A

Intercornual ligament

Spinal Anatomy Exam 2 (28 decks)

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