Patch of tissue on the dorsal surface of the vertebrate embryo that develops into the nervous system; visible ~18 days after conception.
Trench that develops down the center of the neural plate.
Fluid-filled tube formed in the vertebrate embryo when the lips of the neural groove fuse; develops into the CNS.
Vertebrate embryonic structure found dorsal and lateral to the neural tube; formed from neural plate cells that break away during neural tube formation; develops into PNS.
Stage of neural development where many new neurons are created by cell division in the neural tube near the fluid-filled inner canal.
Stage of neural development where newly created neurons migrate from the region of cell division to appropriate locations in the developing neural tube.
Radial glial cells
Temporary network of glial cells that exists in the developing neural tube only during the period of neuron migration; migrating neurons travel outward from their point of creation along this glial network.
Stage of neural development where developing neurons align themselves to form the specific structures of the brain.
Process growth and synapse formation
Stage of neural development where axons and dendrites grow and establish synaptic contacts.
Amoeba-like structure at the growing tip of each axon and dendrite; direct the growth of axons and dendrites to appropriate targets.
Stage of early nervous system development where large numbers of neurons die, typically those that have not established effective synaptic contacts.
Stage of neuron development during which many axons become myelinated by glial cells.
Most anterior of the three swellings that appear at the anterior end of the developing vertebrate neural tube; the prosencephalon.
Middle swelling of the three that appears at the anterior end of the developing vertebrate neural tube;the mesencephalon.
Most posterior of the three swellings that appear at the anterior end of the developing vertebrate neural tube; the rhombencephalon.
Anterior division of the forebrain; most anterior of the five divisions of the brain.
Posterior division of the forebrain; area of the brain between the telencephalon and the mesencephalon.
The midbrain; division of the brain between the diencephalonand the metencephalon.
Anterior division of the hindbrain; the area of the brain between the mesencephalon and the myelencephalon.
Most posterior of the brain's five divisions; area of the brain between the metencephalon and the spinal cord.
States: axons grow to their correct targets because they are programmed to follow to their source specific chemical signals released by their target cells.
States: Axons grow to their correct targets because they are programmed to follow specific trails through the developing nervous system
Hippocampi (sing. hippocampus)
Large limbic structures of the medial temporal lobes, one in each hemisphere; involved in certain kinds of memory.
Bulbous structures on the inferior surface of the frontal lobes, one in each hemisphere; they are the first relay nuclei of the olfactory system.