Vertebral Column Flashcards
Vertebral regions
Cervical- neck Thoracic- thoracic cavity/rib cage area Lumbar- lower back Sacral- hip area Caudal- tail
Formula for # of different veterbre per region in a dog
C-7, T-13, L-7, S-3, Cd-20
Body of vert.
solid cylinder of bone ventral to canal for spinal cord
Vertebral arch
forms lateral and dorsal boundaries of the foramen
Vertebral foramen
forms the vertebral canal for the spinal cord
Pedicles
lateral parts of vertebral foramen
Lamina
dorsal part of vertebral foramen
What part of the vertebra is removed to relieve pressure from the spinal cord
the lamina
known as a laminectomy
Pedicles contain
caudal and cranial vertebral notches
Intervertebral foramina is formed by
the vertebral notches of adjacent vertebrea
What are the bony processes in the “typical” vertebra
Spinous process- dorsal mid-line of vertebral lamina
Transverse process- paired extensions from either side of vertebrae
Cranial & caudal articular processes- on lamina & extend cranially or caudally to articulate with the adjacent vertebrae
Which vertebra articulates cranially with the occipital condyles of the skull?
Atlas
Joint between the atlas and the skull? Primary movement?
Atlantoocipital joint
Flexion and extension (“yes” movement)
2nd cervical vertebra and its joint with the 1st cervical vertebra?
Axis
Atlantoaxial joint
Differences between the typical vert and the atlas
Body replaced by ventral arch
Dorsal arch contains pedicles and lamina
Transverse processes are shelf like and called the wings of the atlas