Spinal Cord and Deep back Flashcards
What kind of joint is the Intervertebral symphysis?
symphysis
What kind of joint is the Facet (zygapophysial joints)?
plane
What kind of joint is the Costovertebral?
gliding
What kind of joint is the Costotransverse?
gliding
What kind of joint is the Atlanto-occipital?
ellipsoidal
What kind of joint is the Median atlanto-axial?
pivot
What kind of joint is the Lateral atlanto-axial?
plane or gliding
What kind of joint is the Uncovertebral?
plane or gliding
What kind of joint is the Zygapophysial (facet) in the neck?
plane or gliding
Anterior longitudinal (blends into the anterior atlanto-occipital membrane) ligament
ATTACHMENTS- to anterior surfaces of vertebral bodies and intervertebral discs
FUNCTION- stabilizes vertebral column and prevents hyperextension
Posterior longitudinal (becomes the tectorial membrane) ligament
ATTACHMENTS- to posterior surfaces of vertebral bodies and intervertebral discs
FUNCTION- prevents hyperflexion of the vertebral column
Ligamentum flavum ligament
attachments- interconnect adjacent laminae; resist terminal flexion between vertebrae
Supraspinous ligament
attachments- to apices of spinous processes C7 to sacrum
Interspinous ligament
attachments- interconnect adjacent spinous processes
Intertransverse ligament
Attachments- interconnect adjacent transverse processes
Ligamentum nuchae
ATTACHMENTS- from C7 spinous process to external occipital protuberance with slips to intervening spinous processes
FUNCTION- attachment for cervical muscles
Transverse (cruciate) of atlas
ATTACHMENTS- from lateral mass to lateral mass of atlas
FUNCTION- maintains integrity of articulation between dens and anterior arch of the atlas
Tectorial membrane
ATTACHMENTS- from the posterior surface of axial body to anterior margin of the foramen magnum
FUNCTION- supports atlanto-occipital & atlanto-axial joints
Alar ligament
ATTACHMENTS- from dens to medial aspect of the occipital condyles
FUNCTION- limits rotation of the median atlanto-axial joint
Anterior atlanto-occipital membrane
ATTACHMENTS- from anterior arch of the atlas to the adjacent occipital bone
FUNCTION- supports atlanto-occipital joints & helps to limit extension of the head
Posterior atlanto-occipital membrane
ATTACHMENTS- from posterior arch of the atlas to the adjacent occipital bone
FUNCTION- supports atlanto-occipital joints
Erector spinae
ATTACHMENTS- from TLF to the sacrum, iliac crest, spinous processes L5-T11
supraspinous lig., angles of ribs to costal angles (iliocostalis), ribs & transverse processes (longissimus), and spinous processes (spinalis)
- Spinalis: thoracis, cervicis, capitis (represented as semispinalis capitis)
- Longissimus: capitis, cervicis, thoracis
- Iliocostalis: cervicis, thoracis, lumborum
ACTIONS- extension & lateral flexion of the vertebral column
Semispinalis
ATTACHMENTS- from transverse processes to distant superior spinous processes
1. Semispinalis: capitis, cervicis, thoracis
ACTIONS- extension & contralateral rotation of the vertebral column
Multifidus
ATTACHMENTS- from sacrum, posterior SI ligament, posterior iliac spine, transverse processes to more superior spinous processes
multifidus: sacral, lumbar, thoracic, cervical
ACTIONS- extension & contralateral rotation of the vertebral column
Rotatores longus and brevis
ATTACHMENTS: transverse to spinous process of vertebra above (1-2 levels)
ACTIONS: extension & contralateral rotation of the vertebral column
Interspinales
ATTACHMENTS: between spinous processes of adjacent vertebrae
cervical (6), thoracic (2-3), lumbar (4)
ACTION: extension of spine
Intertransversarii
ATTACHMENTS: between the transverse processes of adjacent vertebrae
ACTION: lateral flexion of spine
Splenius cervicis
ATTACHMENTS: from spinous processes of T3-T6 to posterior tubercles of transverse processes of first 3 cervical vertebrae
ACTIONS: extension, lateral flexion, ipsilateral rotation
innervation: dorsal rami of spinal nerves
Splenius capitis
ATTACHMENTS: from ligamentum nuchae and spinous processes T4-C7 and mastoid process
ACTIONS: extension, lateral flexion, ipsilateral rotation
INNERVATION: dorsal rami of spinal nerves
Longus colli
ATTACHMENTS: from anterior tubercles and bodies T3-C3 to anterior tubercles and bodies C6-C1
ACTIONS: flexion, lateral flexion, ipsilateral rotation
INNERVATION: ventral rami of spinal nerves (C2-7)
Longus capitis
ATTACHMENTS: from anterior tubercles C3-C6 to
basilar portion occipital bone
ACTIONS: flexion, ipsilateral rotation
INNERVATION: ventral rami of spinal nerves (C1-3)
- The ligamenta flava are ____ to the spinal cord
posterior
- The dura mater is _____ to the spinal cord
superficial
- The arachnoid mater is _____ to the spinal cord and deep to the dura mater
superficial
- The conus medullaris is at the ____ end of the spinal cord
inferior
- The filum terminale internum is ____ within the cauda equina
central
- The denticulate ligament is _____ the anterior and posterior roots
between
Name the structural components of vertebrae
- Vertebral body
- superior articular process
- transverse process
- spinous process
- inferior articular process
- vertebral arch(pedicle and lamina)
- vertebral foramina
- superior/inferior notches
What is the function of the spinous process and transverse process?
muscle attachments and movement
what is the function of articular processes?
restriction of movement
what is the function of vertebral arches?
protection of spinal cord
what is the function of vertebral bodies?
support of body weight
Discuss the changes in vertebrae with advancing age
- there is a decrease in bone density
- that leads to the articular surfaces bowing inward
- compression at periphery
- osteophytes form in response
- force distribution shifted to periphery and more compression
What is Kyphosis?
anterior flexion of the vertebral column
thoracic and sacral
what is lordosis?
posterior extension of the vertebral column
cervical and lumbar
Summarize the development of spinal curvatures
- all born with primary curvatures: thoracic and sacral
- kyphosis are there at birth
- as we develop, secondary curvatures appear: cervical and lumbar
- tied to developmental milestones
- cervical lordosis comes on board when infant begins to stabilize and support head
- lumbar when toddler begins walking
What is excessive kyphosis?
Usually at the thoracic spine
-osteoporosis and several compression fractures in the spine can lead to this
What is excessive lordosis?
usually at the lumbar spine
-pregnant and athletes with tight hip flexors
What is scoliosis?
lateral deviation of the vertebral column
Describe the posterolateral herniation
- nucleus pulposes pokes out of annulus fibrosis
- fibrosus breaks down and extension of nucleus pulposus out of the anulus fibrosus=herniated disc
- most common for nucleus pulposus to extrude in posterolateral direction
- disc herniation impacts spinal nerves
- spinal nerve out lower level gets the consequences of the pressure from the herniation
List the six primary movements of the spine and discuss how the amount of motion differs between regions of the spine.
- Extension, flexion, lateral flexion/extension, rotation of head and neck, rotation of upper trunk
- flexion and extension: most at cervical spine and least at thoracic
- axial rotation: a lot at cervical, hardly any at lumbar
- lateral flexion: cervical spine very mobile
- zygapophysial joint: position of articular processes will govern movement
Describe zygapopphysial joint orientation
-Cervical 45: all movements
sup articular process= post sup
inf articular process= ant inf
-thoracic 60: not a lot of movements
sup artic process= posterior
inf artic process= anterior
articulations knock into eachother and restrict movement
-lumbar 90: flexion and extension
no rotation bc facets would knock into eachother
medial/lateral
What are the superficial extrinsic back muscles?
trapezius
lats
levator scap
rhomboids
What are the intermediate extrinsic back muscles?
serratus posterior inferior and superior
intercostal nerves
What are the intrinsic superficial back muscles?
splenius capitis
splenius cervicis
dorsal rami of spinal nerves
What are the intermediate intrinsic back muscles?
erector spinae
spinalis: thoracis, cervicis, [semi] capitis
longissimus: capitis, cervicis, thoracis
iliocostalis; cervicis, thoracis, lumborum
lateral branch or dorsal rami of spinal nerves
what are the deep intrinsic back muscles?
transversospinales:
- semispinalis; capitis, thoracis, cervicis
- multifidus
- rotatores: longus and brevis
- interspinales
- intertransversarii
dorsal rami of spinal nerves
Serratus Posterior superior
ATTACHMENTS: from spinous process of C7-T3 to inferior borders of ribs 2-5
ACTIONS: proprioception of thoracic wall
INNVERATION: intercostal nerves T1-4
Serratus Posterior inferior
ATTACHMENTS: spinous process of T11-L2 to inferior borders of ribs 9-12
ACTIONS: proprioception of thoracic wall
INNERVATION: intercostal nerves T9-12