![]() Both axons and dendrites are surrounded by a white protective coating called the myelin sheath. ![]() ![]() The dendrites receive information from other nearby cells and transmit the signals to the soma and the axon carries signals away from the neuron. NeuronsĪ neuron consists of a cell body, the soma, which contains the nucleus and surrounding cytoplasm, several short thread-like projections, called dendrites, and of one long filament, called the axon. Neurons transmit nerve signals and are surrounded by glial cells, that provide mechanical and physical support as well as electrical insulation between neurons. Description Nervous tissueĪll nervous tissue-including that of the SNS-consists of two main cell types: neurons and glial cells. Sensory nerves convey nerve impulses from the sense organs to the central nervous system (CNS), while motor nerves convey nerve impulses from the CNS to skeletal muscle effectors. It includes both sensory and motor nerves. The SNS controls voluntary activities, such as movement of skeletal muscles. The somatic nervous system (SNS) is a division of the peripheral nervous system (PNS).
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