Where in the vertebral column is a lumbar puncture generally done Why are these the sites of choice?

Where in the vertebral column is a lumbar puncture generally done Why are these the sites of choice?

WHERE IN THE VERTEBRAL COLUMN IS A LUMBAR PUNCTURE GENERALLY DONE. WHY IS THIS THE SITE OF CHOICE? BETWEEN L3 AND L5. IT DOES NOT ENDANGER THE DELICATE SPINAL CORD.

In what two regions is the spinal cord enlarged?

Two enlargements of the spinal cord can be visualized: The cervical enlargement, which extends between C3 to T1; and the lumbar enlargements which extends between L1 to S2 (Figure 3.1). The cord is segmentally organized.

What is the significant of these spinal enlargements?

We have not one, but two enlargements to the spinal cord. These enlargements hold the circuitry that control the upper limbs and lower limbs. This is the reason they are enlarged areas of the spinal cord, becuase there is a higher amount of grey matter in these areas than other locations along the cord.

At what spinal levels is the lumbosacral enlargement?

Lumbar enlargement comprises the spinal cord segments from L2 to S2, and is found about the vertebral levels T9 to T12.

Where is the needle inserted during a lumbar puncture?

During a lumbar puncture, the syringe needle is inserted in the midline and within the median plane. Why? What structures, ligaments and others, does the needle traverse before entering the lumbar cistern?

What are other situations are lumbar puncturesperformed?

Other than obtaining CSF samples, in what other situations are lumbar puncturesperformed? A lumbar puncturemay also be used for injecting anesthetic agents, as in a spinal block, or injecting of radiological contrast agents. You are called to evaluate a newborn infant in the labor and delivery room.

Why do I have headaches after a lumbar puncture?

It is believed that the decrease in CSF volume, however small, following a lumbar puncturecauses the brain to sag a bit. This stretches the dura, which in turn causes severe headaches. In order to avoid this, the patient is asked to lay down with the head at a slightly lower level than the body (i.e. no pillow).

Where is the syringe needle inserted in the spinal cord?

The line connecting the top of the two iliac crests, the supracrestal line, passes through the spinous process of the L4 vertebra. During a lumbar puncture, the syringe needle is inserted in the midline and within the median plane.

Where does a lumbar puncture generally take place?

Where in the vertebral column is a lumbar puncture generally done? Why is that the site of choice? The spinal cord is enlarged in 2 regions. What are they?

Which is the terminus of the spinal cord?

-what is the spinal cord terminus conus medullaris “ANATOMY OF THE SPINAL CORD” -what is the collection of spinal nerves traveling in the vertebral canal below the terminus of the spinal cord cauda equina NOTE: KNOW HOW TO LABEL THE STRUCTURE OF THE SPINAL CORD ON PAGE 335 STUDY “ANATOMY OF THE SPINAL CORD” -the neuron type found in dorsal horn

Where does the ventral rami of the spinal cord run?

The ventral rami of spinal nerves C1 through T1 and T12 through S4 take part in forming ______. The ventral rami of T2 through T12 run between the ribs to serve the ______ _____. “WHAT WOULD HAPPEN IF THE FOLLOWING WERE DAMAGED OR TRANSECTED?” “WHAT WOULD HAPPEN IF THE FOLLOWING WERE DAMAGED OR TRANSECTED?”