|Diagram depicting the main subdivisions of the embryonic vertebrate brain. These regions will later differentiate into forebrain, midbrain and hindbrain structures.|
|Gray's||subject #187 767|
The myelencephalon is a developmental categorization of a portion of the central nervous system. The myelencephalon is composed of the medulla; 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).
Brain: rhombencephalon (hindbrain)
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