Neuroanatomy · Nervous System · Hard
Obex
Meaning: The point at the lower end of the fourth ventricle where it narrows into the central canal of the cord.
In practice: The obex is a useful landmark when describing lesions of the medulla.
Quick check
Two questions on related neuroanatomy words.
Which word means: A region of cerebral cortex folded deep within the lateral fissure, involved in taste, interoception and emotional awareness.
Answer: Insula
Which word means: Describing the grey matter around the midbrain's fluid channel, a key centre for descending pain control.
Answer: Periaqueductal
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