1 Flashcards
(46 cards)
What provides flexible support for the trunk and head?
Vertebral Column
What transmits weight of the trunk and upper extremities to the lower extremities?
Vertebral Column
Where does the spinal canal begin and end?
Begins at base of skull and extends to sacrum
What forms the spinal canal?
Succession of the vertebral foramen
What is enclosed and protected by the spinal canal?
Spinal Cord
Where does the spinal cord begin?
Below the medulla oblongata
Where does the spinal cord continue until?
Lower border of L1
What is the pointed end of the spinal cord called?
Conus medullaris
What continues inferiorly from the conus medullaris?
Cauda Equina
What separates adult vertebrae?
Intervertebral Disks
What do intervertebral disks allow?
Flexibility
How many sections are in the vertebral column?
Cervical, Thoracic, Lumbar, Sacrum, Coccyx
How many vertebrae are in the cervical section?
First 7 vertebrae
How many vertebrae are in the thoracic section?
Middle 12 vertebrae
How many vertebrae are in the lumbar section?
Final 5 vertebrae
What is the sacrum shaped like?
Shovel-shaped bone
How many separate bones does a child have in the vertebral column?
33 separate bones
How many separate bones does an adult have in the vertebral column?
26 separate bones
What do the curves of the spine help maintain?
Balance along center of gravity
What are the primary curves of the spine?
- Thoracic
- Sacral
What are compensatory (secondary) curves?
- Cervical
- Lumbar
What is lordosis?
Exaggerated lumbar curvature
What is kyphosis?
Abnormal posterior convexity of thoracic spine
What is scoliosis?
Abnormal lateral curvature of the spinal column