Vertebral Column

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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 (?)