Final answer:
Cerebrospinal fluid (CSF) is the body fluid obtained through a lumbar puncture, which is an important medical procedure used for diagnosing neurological conditions.
Step-by-step explanation:
The body fluid obtained through a lumbar puncture is cerebrospinal fluid (CSF). This procedure involves inserting a needle between the lumbar vertebrae in the lower back to collect CSF, which is essential for the majority of diagnostic procedures within neurology. The cerebrospinal fluid serves a crucial role in protecting and cushioning the brain and spinal cord whilst being located in the subarachnoid space of the meninges. A lumbar puncture is performed in the lower lumbar area to safely access the CSF due to the anatomical structure of the central nervous system (CNS).