medulla

Words with a similar base: medulla, medulla_oblongata

'medulla'

[myelin.n.01] as in: a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers

'medulla'

[medulla_oblongata.n.01] as in: lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata)

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Examples:
the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning

'medulla'

[medulla.n.03] as in: the inner part of an organ or structure in plant or animal