Vertebral Column
Do NowType 2 Writing
4 minutes to write 5 things from last class
SpineThe spine (vertebral column) spans from the
base of the spine, all the way to the pelvis
Function – Major core support and protects the spinal cord
Curvature Kyphosis (hunch back) Lordosis
Spine24 single vertebrae make up the spine
An additional 2 fused bones at the bottom (sacrum and coccyx) help provide a flexible curved structure
What are the 3 different types of vertebrae? Cervical Vertebrae Thoracic Vertebrae Lumbar Vertebrae
Cervical Vertebrae7 Cervical Vertebrae
C1 – C7
Superior portion of the spine
C1 and C2 are commonly referred to as… Atlas Axis
Smaller than the rest of the vertebrae
Thoracic Vertebrae12 Thoracic Vertebrae
T1 – T12
The only vertebrae that articulate with the ribs
Body of the Vertebrae is slightly larger than that of the Cervical Vertebrae
Lumbar Vertebrae5 total lumbar vertebrae
L1 – L5
Large, block-like bodies
Most sturdy of all the vertebrae
SpineTo help remember the number of bones in the
vertebrae, remember common meal times 7am 12 noon 5pm
Intervertebral DisksBetween each vertebrae lie intervertebral disks
Each disk is composed of strong, fibrous tissue Inside the fibrous tissue lies a semifluid nucleus
Function – Shock absorption
Injuries of the SpineHerniated Disk
Cervical Sprain (Whiplash)
Spina Bifida
Herniated DiskDisks, specifically lumbar, are subjected to
constant, intense stress
Stress can cause degeneration, tears and cracks in fibrous disk tissue
Tears in the tissue can cause the fluid to fall out and compress the nerves of the spinal cord
Disk Herniation
Cervical Sprain (Whiplash)Occurs from a sudden snap of the head
Pain might not be present initially, but almost always appears the day after the trauma
Spina BifidaA birth defect when the vertebrae do not form
around the spinal cord
Mild cases might not need treatment
Severe cases can require surgery
Spina Bifida
HomeworkAnswer Questions 14-16 on pg. 158 (?)