medulla oblongata

lowest part of the brain, part of the brain connected to the spinal cord (Anatomy)

The medulla oblongata is the lower portion of the brainstem.
See more at Wikipedia.org...

Medulla ob·lon·ga·ta n. pl. medulla ob·lon·ga·tas or medullae ob·lon·ga·tae The lowermost portion of the vertebrate brain, continuous with the [more]Medulla oblongata - Community and Resources

Noun
1. lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata); "the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning"
(synonym) medulla, bulb
(hypernym) neural structure
(part-holonym) brainstem, brain-stem, brain stem
(part-meronym) respiratory center

oblongata, part of the term "medulla oblongata" (Anatomy)