Some other fun facts about the construction of the Mackinac Bridge. The annual Mackinac Bridge Walk is held every year on Labor Day. Two lanes of traffic are closed and 50-80,000 people, all led by the Governor of Michigan walk together over the bridge.
A lumbar puncture (also called a spinal tap) is a procedure to collect and look at the fluid (cerebrospinal fluid, or CSF) surrounding the brain and spinal cord. During a lumbar puncture, a needle is carefully inserted into the spinal canal low in the back (lumbar area). Samples of CSF are collected.
View All. A lumbar puncture, or spinal tap, is a common neurological procedure that removes cerebrospinal fluid (CSF) from the spinal canal so a doctor can study the fluid more thoroughly. While neurologists perform this test frequently, the idea of a lumbar puncture makes most people nervous. Why a Lumbar Puncture May Be Needed