Question

question 7 what is the primary purpose of a lumbar puncture? a to measure blood pressure b to visualize brain structure c to analyze cerebrospinal fluid d to assess brainwaves

Explanation:

A lumbar puncture (spinal tap) is a medical procedure where a needle is inserted into the spinal canal, usually in the lower back, to collect cerebrospinal fluid (CSF). The primary purpose of this procedure is to analyze the cerebrospinal fluid for various conditions such as infections (e.g., meningitis), bleeding in the brain, or certain types of cancers. It can also be used to measure the pressure of the CSF (which is related to intracranial pressure in some cases), but the key and most direct purpose is the analysis of the cerebrospinal fluid itself.

• Option A: Measuring blood pressure is not related to a lumbar puncture. Blood pressure is measured using a sphygmomanometer on the arm or other arteries.
• Option B: Visualizing brain structure is typically done using imaging techniques like MRI (Magnetic Resonance Imaging) or CT (Computed Tomography) scans, not a lumbar puncture.
• Option D: Assessing brainwaves is done using an electroencephalogram (EEG), where electrodes are placed on the scalp to record electrical activity of the brain.

Answer:

C. To analyze cerebrospinal fluid