Deep Back/ Vertebral Column

Question 1

3 columns of erector spinae

Innervated by

Answer 1

Iliocostalis (Most Lateral)

Longissimus (Intermediate)

Spinalis (Most Medial)

Dorsal Rami

Question 2

Primary Curvature

Answer 2

Thoracic and Sacral

Hump of the curve faces anterior

Question 3

Secondary Curvature

Answer 3

Cervical and Lumbar

Hump of curve faces posterior

Question 4

of Cervial Vert.

Answer 4

7

Question 5

of Thoracic Vert

Answer 5

12

Question 6

of Lumbar Vert

Answer 6

5

Question 7

of Sacral vert

Answer 7

5

Question 8

of Coccygeal Vert

Answer 8

4

Question 9

Typical Vertebrae has ___ joints

Answer 9

6 (4 synovial joints and 2 sympheses)

Question 10

Zygapophysial Joints located B/t

Answer 10

Articular Processes on adjacent vertebrae

Question 11

Zyg. Joints allow ___ movement for (1) cervical, (2) thoracic, and (3) Lumbar vertebrae

Answer 11

Cervical: Flexion and Extension

Thoracic: Rotation

Lumbar: Interlocked to limit range of movement; some flexion and extension

Question 12

Anterior Longitudinal and Posterior Longitudinal Ligaments run

Answer 12

Length of spinal cord

Question 13

Ligamentum flava pass b/t

Answer 13

Lamine of adjacent vert.

Resists separation of laminae in flexion and assist in extension

Question 14

Ligamentum Nuchae runs

Answer 14

C1-C7

Question 15

Interspinous Ligament passes B/t

Answer 15

adjacent spinous processes

Question 16

Denticulate Ligament

Answer 16

Longitudinal sheet of pia matter extending laterally toward arachnoid and dura mater

Question 17

Vertebral bodies ___ in size from ____ to _____

Answer 17

Increase; Superior; Inferior

Question 18

Kyphosis

Answer 18

Excess curvature of Thoracic region; irreversible and age-related; Think: chin going to chest

Question 19

Lordosis

Answer 19

Too much weight causes exaggerated lumbar curve; Cured by losing weight

Question 20

Scoliosis

Answer 20

Curvature deviation (L&R) away from midsaggital line

Question 21

Costal facets

Answer 21

Where thoracic vertebrae articulate with ribs

Question 22

Thoracic vertebrae distinguished by…

Answer 22

Sharp descending spinous processes and costal facets

Question 23

Atlas (C1) fused to Axis (C2) via

Answer 23

Dens

Question 24

Supraspinous Ligaments run

Answer 24

Posterior spine of spinous processes

Question 25

Posterior longitudnal ligaments run

Answer 25

the length of the spine **INSIDE** vertebral foramen

Question 26

Ant. Long. Lig/ Post. Long. Lig Which resists hyperflexion and which resists hyperextension?

Answer 26

Anterior: Hyperextension Posterior: Hyperflexion

Question 27

Internal Vertebral Plexus

Answer 27

Valveless venous system running lenth of vertebral column. Blood flow can go either way but diseases (cancer) can spread easily too. Superior to the dura mater

Question 28

CSF located in

Answer 28

subarachnoid space Samples of CSF taken @ cauda equina

Question 29

Conus medularis

Answer 29

Spinal cord terminates at L2

Question 30

Flium Terminae

Answer 30

Pia mater (Joined by dura at S2) that ties conus medularis to coccyx

Question 31

Disc Evulsion involves

Answer 31

herniation of nucleus pulposus material through age-weakened annulus fibrosus

Question 32

Coccygeal Ligament

Answer 32

continuation of the dura mater that extends below the end of the dural sac to attach to the coccyx.