Spine (Neck and Back) Flashcards
How many vertebra?
Describe
7 C 12 T 5 L 5 S (fused) 4 Coccygeal (fused)
3 column theory (Denis):
○Anterior: ALL & anterior ⅔ of vertebral body/annulus
○Middle: PLL & posterior ⅓ of vertebral body/annulus
○Posterior: Pedicles, lamina, spinous process, and ligaments
describe normal spinal curves
•Spinal curves: normal curves ○Cervical lordosis ○Thoracic kyphosis ○Lumbar lordosis ○Sacral kyphosis
describe the spinal region:
cervical:
C1-C2: unique bones allow stabilization of occiput to spine and rotation of head. Motion: rotation and flexion/extension.
describe the spinal region:
thoracic
Relatively stiff due to costal articulations. Motion: rotation. Minimal flexion/extension.
Describe the spinal region:
thoracolumbar
Facet orientation transitions from semicoronal to sagittal. Segments are mobile. Most commonsiteof lower spine injuries.
describe the lumbar spinal region
Largest vertebrae. Common site for pain. Houses cauda equina. Motion: flexion/extension. Minimal rotation.
describe the sacral spinal region
no motion. center of pelvis
Which part of vertibrae?
Has articular cartilage on both superior & inferior surfaces. Articulates with intervertebral discs & gets larger distally.
body (centrum)
which part of vertibrae?
Made up of pedicles and lamina. Develops from 2 ossifications centers that fuse. Failure to fuse occurs in spina bifida. It forms the vertebral canal for the spinal cord.
arch
which part of vertebrae?
Spinous: ligament attachment site.
Transverse: rib (T-spine) and ligament attachment site.
processes
which part of vertebrae?
Vertebral: spinal cord/cauda equina.
Neural: nerve roots exit via here
foramina
Name the four muscles of the suboccipital triangle
- Rectus capitis posterior major
- Rectus capitis posterior minor
- Obliquus capitis superior
- Obliquus capitis inferior
OINA
Anterior scalene
O: C3-6 TP
I: 1st rib
N C5-C8 nerve roots
A: Laterally flexes neck and elevates 1st rib
MIddle scalene OINA
O: C2-7 TP
I: 1st rib
N: C5-8 nerve roots
A: Laterally flexes neck and elevates 1st rib
Posterior scalene OINA
O: C4-6 TP
I 2nd rib
N: C5-8 nerve roots
A: laterally flexes neck and elevates 2nd rib
Rectus capitus posterior major
OINA
part of suboccipital triangle
O: spine of axis
I inferior nuchal line
N: Suboccipital nerve
A: extend, rotate, lateral flex head
Rectus capitis posterior minor
OINA
part of suboccipital triangle O: posterior tubercle of atlas I Occipital bone N: suboccipital nerve A: extend, laterally flex
Obliquus capitis superior
OINA
part of suboccipital triangle O: Atlas transverse process I: occipital bone N: suboccipital nerve A: extend rotate, lateral flex
Obliquus capitis inferior
OINA
part of suboccipital triangle O: spine of axis I: atlas transverse process N: suboccipital nerve A extend, laterally rotate
Name the 7 superficial (extrinsic) spinal muscles
Trapezius Latissimus dorsi Levator scapulae Rhomboid minor Rhomboid major Serratus posterior superior Serratus posterior inferior
Trapezius
group?
OINA?
Superficial (extrinsic) O: Spinous process C7-T12 I: clavicle; scapula (spine, acromion) N: Thoacodorsal A: rotate scapula
Latissimus dorsi
group?
OINA?
superficial (extrinsic) O: Spinous process T6-S5 I: humerus N: Thoracodorsal A: Extend, adduct, IR arm
Levator scapulae
group?
OINA
superficial (extrinsic) O: TP C1-4 I scapula (medial) N: Dorsal scapular n, C3, C4 (dorsal rami) A: elevate scapula