During the procedure known as a(n)________,a needle is inserted into the subarachnoid space in the inferior lumbar region.

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The procedure described is a lumbar puncture, also known as a spinal tap, in which a needle is inserted into the subarachnoid space of the lumbar region to obtain a sample of cerebrospinal fluid for diagnostic purposes. EEG (A) is a test that measures electrical activity in the brain, encephalomyelogram (B) is an outdated term for a myelogram that involves injecting contrast dye into the spinal canal, laminectomy (C) is a surgical procedure to remove part of the vertebral bone to access the spinal canal, and thoracic tap (E) involves inserting a needle into the thoracic cavity of the chest, not the lumbar region of the back.

During the Procedure Known as A(n)________,a Needle Is Inserted into the Subarachnoid