- sympathetic nervous system development
The process whose specific outcome is the progression of the sympathetic nervous system over time, from its formation to the mature structure. The sympathetic nervous system is one of the two divisions of the vertebrate autonomic nervous system (the other being the parasympathetic nervous system). The sympathetic preganglionic neurons have their cell bodies in the thoracic and lumbar regions of the spinal cord and connect to the paravertebral chain of sympathetic ganglia. Innervate heart and blood vessels, sweat glands, viscera and the adrenal medulla. Most sympathetic neurons, but not all, use noradrenaline as a post-ganglionic neurotransmitter.
- somatic motor neuron fate commitment
The commitment of unspecified motor neurons to specific motor neuron cell along the anterior-posterior axis of the spinal cord and their capacity to differentiate into specific motor neurons.
- lateral motor column neuron differentiation
The process in which differentiating motor neurons in the neural tube acquire the specialized structural and/or functional features of lateral motor column neurons. Lateral motor column neurons are generated only on limb levels and send axons into the limb mesenchyme. Differentiation includes the processes involved in commitment of a cell to a specific fate.
- gemmule
Spine-like process found on some neurons, e.g., periglomerular cells of olfactory cortex.
- C bouton
Synaptic bouton found in spinal cord on the soma and proximal dendrites of motor neurons.