The last step in the formation of the neural tube, where the paired neural folds are brought together and fuse at the dorsal midline.

The last step in the formation of the neural tube, where the paired neural folds are brought together and fuse at the dorsal midline.

The orderly movement of a cell that will reside in the hindbrain.

The orderly movement of a cell that will reside in the hindbrain.

The process whose specific outcome is the progression of the cerebellum over time, from its formation to the mature structure. The cerebellum is the portion of the brain in the back of the head between the cerebrum and the pons. In mice, the cerebellum controls balance for walking and standing, modulates the force and range of movement and is involved in the learning of motor skills.

Any process that activates or increases the frequency, rate or extent of signal transduction mediated by the stress-activated MAPK cascade.

Any process that activates or increases the frequency, rate or extent of signal transduction mediated by the stress-activated MAPK cascade.

Any process that activates or increases the frequency, rate or extent of signal transduction mediated by the stress-activated MAPK cascade.

The process in which a relatively unspecialized cell acquires specialized features of a muscle cell.

The process in which a relatively unspecialized cell acquires specialized features of a muscle cell.

The process in which a relatively unspecialized cell acquires specialized features of a muscle cell.

A series of molecular signals generated as a consequence of a semaphorin receptor (composed of a plexin and a neurophilin) binding to a semaphorin ligand.

A series of molecular signals generated as a consequence of a semaphorin receptor (composed of a plexin and a neurophilin) binding to a semaphorin ligand.

That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.

The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

An electron dense network of proteins within and adjacent to the postsynaptic membrane of an asymmetric, neuron-neuron synapse. Its major components include neurotransmitter receptors and the proteins that spatially and functionally organize them such as anchoring and scaffolding molecules, signaling enzymes and cytoskeletal components.

An electron dense network of proteins within and adjacent to the postsynaptic membrane of an asymmetric, neuron-neuron synapse. Its major components include neurotransmitter receptors and the proteins that spatially and functionally organize them such as anchoring and scaffolding molecules, signaling enzymes and cytoskeletal components.

A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.

The lipid bilayer surrounding a synaptic vesicle.

The lipid bilayer surrounding a synaptic vesicle.

The junction between a nerve fiber of one neuron and another neuron, muscle fiber or glial cell. As the nerve fiber approaches the synapse it enlarges into a specialized structure, the presynaptic nerve ending, which contains mitochondria and synaptic vesicles. At the tip of the nerve ending is the presynaptic membrane; facing it, and separated from it by a minute cleft (the synaptic cleft) is a specialized area of membrane on the receiving cell, known as the postsynaptic membrane. In response to the arrival of nerve impulses, the presynaptic nerve ending secretes molecules of neurotransmitters into the synaptic cleft. These diffuse across the cleft and transmit the signal to the postsynaptic membrane.