John Lawrence Sullivan (October 15, 1858 â February 2, 1918), also known as the Boston Strong Boy, was recognized as the first Heavyweight Champion of gloved boxing (Whites only) from February 7, 1882, to 1892, and is generally recognized as the last heavyweight champion of bare-knuckle boxing (Whites only) under the London Prize Ring Rules.
1 Efferent neurons (also called motor neurons) carry signals from the gray matter of the CNS through the nerves of the peripheral nervous system to effector cells. 2  The effector may be smooth, cardiac, or skeletal muscle tissue or glandular tissue. Afferent, Efferent, and Mixed Nerves. 2  Some of the nerves in the body are specialized for carrying information in only one direction, similar to a one-way street. 3  Nerves that carry information from sensory receptors to the central nervous system only are called afferent nerves.
A clump of neuron cell bodies, for example, is called a ganglion (plural: ganglia) or a nucleus (plural: nuclei). A fiber made up of many axons is called a nerve. In the brain and spinal cord, areas that are mostly axons are called white matter, and it is possible to differentiate pathways or tracts of these axons.he main portion of the cell is called the soma or cell body. It contains the nucleus, which in turn contains the genetic material in the form of chromosomes. Neurons have a large number of extensions called dendrites. They often look likes branches or spikes extending out from the cell body.