The posterior part of the developing vertebrate hindbrain or the corresponding part of the adult brain composed of the medulla oblongata and 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).[BTO,WP]. [ BTO:0000758 Wikipedia:Myelencephalon ]
术语信息
- CALOHA:TS-2365
- BTO:0000758
- EHDAA:5526
- HBA:9512
- Wikipedia:Myelencephalon
- VHOG:0000456
- EHDAA2:0001207
- MA:0000205
- CALOHA:TS-0607
- EMAPA:17082
- DHBA:10662
uberon_slim
The posterior of the two brain vesicles formed by specialization of the rhombencephalon in the developing embryo, it comprises the medulla oblongata. [TFD][VHOG]
The early development of most vertebrate brains is similar (...). The zebrafish neural tube follows the same basic differentiation pattern as the mammalian neural tube (reference 1); The brain develops from three embryonic enlargements of the neural tube, which later differentiate into five regions. A forebrain differentiates into telencephalon and diencephalon. The midbrain, or mesencephalon, remains undivided. The hindbrain divides into the metencephalon and myelencephalon. Cavities within the brain enlarge to form a series of interconnected ventricles (reference 2).[well established][VHOG]
the terms metencephalon and myelencephalon are only meaningful in mammals and birds - Neuroanatomy of the Zebrafish Brain. Note that its not clear if this refers to the developing medulla oblongata - MA (adult) has two distinct classes
The posterior part of the developing vertebrate hindbrain or the corresponding part of the adult brain composed of the medulla oblongata and 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).[BTO,WP].