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).
Like most other cells in an organism, a nerve cell generally has both a nucleus and a cell body. Around the cell body, there are extensions called dendrites, which are specialized in receiving different kinds of stimuli depending on the location and purpose of the cell.he three basic types of nerve cells are motor neurons, sensory neurons and interneurons. A motor neuron is a cell that transmits a signal to a muscle or gland.