The Spine Flashcards
How many “regions” of the spine is there?
5
1) cervical
2) thoracic
3) lumbar
4) sacrum
5) coccyx
Ho many vertebral columns is there in the cervical spine?
7
How many vertebral columns is there in the thoracic spine?
12
How many vertebral columns is there in the lumbar spine?
5
The entire weight of the upper body is transfered from the 5th lumbar to the base of the sacrum on the L5-S1 disk.
True or False?
True
What is the bony prominence seen at S1 called?
sacral promontory
Why is there not a spinous process in the 5th sacral region?
it is absent, leaving an opening called the sacral hiatus.
How many vertebral columns is there in the sacral spine?
5 fused segments
the extreme outward curvature of the vertebral body is called
kyphosis
The extreme inward curvature of the vertebral body is called
lordosis
the condition of extreme lateral curvature
scoliosis
Where does the spinal cord originate?
the base of the brain at level of the medulla oblongata
Is the spinal cord thicker or thinner at the cervical and lumbar regions?
thicker
At what level of the spine does the “spinal cord “ stop?
L1-L2
When the spinal cord tapers, the ___ ____ is formed.
Conus medullaris
Is the spinal cord full of white matter or gray matter?
gray matter composed of nerve cells
CSF circulates between the arachnoid and the pia mater
True or False?
True
What are the three meninges of the brain/spinal cord?
dura mater, arachnoid mater, and pia mater.
At what level is the “brachial plexus” located?
at c5-C7 and T1
What are the two large ligaments of the vertebral body?
Anterior longitudinal ligament and posterior longitudinal ligament.
CT best visualizes vertebrae.
True or False
True
MRI best sees the disks, spinal cord and ligaments.
True
True
Gray matter is composed of ____ cells and run along the entire length of the cord.
nerve cells
Whats another word for transverse ligament?
cruciform ligament
The first cervical vertebra is called the _____.
atlas
The cerebral spinal fluid is contained in the spinal cord by the ______ sac
thecal
This results when someone injures the spinal cord between the cervical and lumbosacral enlargements.
Paraplegia
This results if the patient injures the spinal cord above the level of C3
Quadriplegic
What is the largest nerve in the body?
The sciatic nerve
At what level of the spine does the spinal cord end?
L1-L2 , where the conus medullaris is.
What is the correct term for the bundle of nerves at the end of the spinal cord that resembles a horse’s tail
Cauda equina
What is the second cervical vertebra called?
the axis
What protects the spinal cord?
the cerebral spinal fluid
The shock absorbers used in supporting body weight are
intervertebral discs
What is the function of a phrenic nerve?
controls the diaphragm
At what level does the trachea bifurcate?
T5
