While the four system approach to negligence is helpful in identifying whether or not an injury warrants legal action, it does fail to distinguish between two distinctly important concepts in the cause/effect relationship of negligence: factual causation vs. proximate cause. Factual and Proximate Cause
Types of Neurons (Nerve Cells). The human body is made up of trillions of cells. Cells of the nervous system, called nerve cells or neurons, are specialized to carry messages through an electrochemical process. The human brain has approximately 100 billion neurons.To learn how neurons carry messages, read about the action potential.owever, neurons differ from other cells in the body because: 1  Neurons have specialize cell parts called dendrites and axons. 2  Neurons communicate with each other through an electrochemical process. 3  Neurons contain some specialized structures (for example, synapses) and chemicals (for example, neurotransmitters).
Nerve Tissue. Although the nervous system is very complex, there are only two main types of cells in nerve tissue. The actual nerve cell is the neuron. It is the conducting cell that transmits impulses and the structural unit of the nervous system. The other type of cell is neuroglia, or glial, cell. The word neuroglia means nerve glue. These cells are nonconductive and provide a support system for the neurons. They are a special type of connective tissue for the nervous system. Neurons. Neurons, or nerve cells, carry out the functions of the nervous system by conducting nerve impulses. They are highly specialized and amitotic. This means that if a neuron is destroyed, it cannot be replaced because neurons do not go through mitosis. The image below illustrates the structure of a typical neuron.