Vertebral ColumnVertebral Column

Pages 145-152Pages 145-152

Vertebral ColumnVertebral Column

Also called the “Spine”Also called the “Spine” Serves as the axial support of the bodyServes as the axial support of the body Formed from 26 irregular bones Formed from 26 irregular bones

connected and reinforced by ligaments connected and reinforced by ligaments Surrounds and protects the delicate Surrounds and protects the delicate

spinal cordspinal cord

The Vertebral ColumnThe Vertebral Column Vertebrae Vertebrae

separated by separated by intervertebral discsintervertebral discs

The spine has a The spine has a normal curvaturenormal curvature

Each vertebrae is Each vertebrae is given a name given a name according to its according to its locationlocation

Figure 5.14

1.Cervical

C1-C7

2.Thoracic

T1-T12

3.Lumbar

L1-L5

4. Sacrum, fused

5.Coccyx, fused

6.Atlas

C1

7.AxisC2

Structure of a Typical Structure of a Typical VertebraeVertebrae

Figure 5.16

Common Features:•Body or Centrum•Vertebral arch•Vertebral foramen•Transverse processes•Spinous process•Superior and inferior articular processes

A. Cervical; atlas B. Cervical (typical)

C. Thoracic D. Lumbar

HomeworkHomework

Answer #13 on page 70Answer #13 on page 70

Page 174 Short Answer Essay 12-14Page 174 Short Answer Essay 12-14