Embryonic Development
During embryonic development, the embryonic metencephalon develops from the rhombencephalon and gives rise to two structures: the pons and the cerebellum. The alar plate produces sensory neuroblasts, which will give rise to the solitary nucleus and its special visceral afferent (SVA) column, the cochlear and vestibular nuclei—which form the special somatic afferent (SSA) fibers of the vestibulocochlear nerve—, the spinal and principal trigeminal nerve nuclei—which form the general somatic afferent column (GSA) of the trigeminal nerve—, and the pontine nuclei which relays to the cerebellum.
Basal plate neuroblasts give rise to the abducent nucleus—which forms the general somatic efferent fibers (GSE)—, the facial and motor trigeminal nuclei—which form the special visceral efferent (SVE) column—, and the superior salivatory nucleus, which forms the general visceral efferent fibers of the facial nerve.
Read more about this topic: Pons
Famous quotes containing the words embryonic and/or development:
“Quintilian [educational writer in Rome around A.D. 100] thought that the earliest years of the child’s life were crucial. Education should start earlier than age seven, within the family. It should not be so hard as to give the child an aversion to learning. Rather, these early lessons would take the form of play—that embryonic notion of kindergarten.”
—C. John Sommerville (20th century)
“And then ... he flung open the door of my compartment, and ushered in “Ma young and lovely lady!” I muttered to myself with some bitterness. “And this is, of course, the opening scene of Vol. I. She is the Heroine. And I am one of those subordinate characters that only turn up when needed for the development of her destiny, and whose final appearance is outside the church, waiting to greet the Happy Pair!””
—Lewis Carroll [Charles Lutwidge Dodgson] (1832–1898)