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).
1 Cell Specialization: Normal cells have the ability to differentiate or develop into specialized cells. 2  For example, cells can develop into heart cells, brain cells, lung cells or any other cell of a specific type. 3  Cell Death: Normal cells have the ability to self destruct when they become damaged or diseased. Normal cells reproduce properly. 2  Except for sex cells, all cells of the body reproduce by mitosis. 3  Sex cells reproduce through a process called meiosis. 4  Cell Communication: Cells communicate with other cells through chemical signals. 5  These signals help normal cells to know when to reproduce and when to stop reproducing.