Neuroanatomy · Nervous System · Easy
Arachnoid
Meaning: The delicate, web-like middle layer of the three membranes surrounding the brain and spinal cord.
In practice: Blood beneath the arachnoid layer is typical of a ruptured berry aneurysm.
Quick check
Two questions on related neuroanatomy words.
Which word means: Describing the descending motor pathway from the brain's motor strip to the cranial nerve nuclei in the brainstem.
Answer: Corticobulbar
Which word means: A ridge on the surface of the brain separated by sulci.
Answer: Gyrus
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