A lumbar puncture involves the needle traversing through several layers of tissue and meninges to reach the subarachnoid space containing cerebrospinal fluid (CSF).
A lumbar puncture needle passes through the skin, superficial fascia, supraspinous ligament, interspinous ligament, ligamentum flavum, epidural space, dura mater, arachnoid mater, and finally into the subarachnoid space containing CSF.
| Front | What layers are passed by a needle during a lumbar puncture? |
|---|---|
| Back | Superficial fascia Supraspinous ligament Interspinous ligament Ligamentum flavum (POP!!) Epidural space (vertebral venous plexus) Dura mater (POP!!) Arachnoid mater Subarachnoid space (CSF) |
Tags: microbiology
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