AskDefine | Define myelencephalon

Dictionary Definition

myelencephalon n : the posterior part of the hindbrain in developing vertebrates; forms the medulla oblongata in adults [also: myelencephala (pl)]

Extensive Definition

The myelencephalon is a developmental categorization of a portion of the central nervous system. The myelencephalon is composed of the medulla oblongata; contains a portion of the fourth ventricle; as well as the glossopharyngeal nerve (CN IX), vagus nerve (CN X), accessory nerve (CN XI), hypoglossal nerve (CN XII), and a portion of the vestibulocochlear nerve (CN VIII).
myelencephalon in Dutch: Myelencephalon
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