Of or pertaining to James the First, of England, or of his reign or times; especially, pertaining to a style of architecture and decoration popular in the time of James I.; as, Jacobean writers. Etymology: From L. Jacobus James.
ALS is a progressive, degenerative disease of the nervous system. It is one of a group of diseases, called motor neuron diseases (MND), in which specialized nerve cells that control movement of the voluntary muscles gradually cease functioning and die. Fasciculation is a sign of muscle irritability, as the normal action of the lower motor neuron on the muscle is impaired. 2  The sole involvement of lower motor neurons can be seen in a form of ALS called progressive muscular atrophy.
While the medical term is muscle atrophy, most of us refer to it as muscle wasting or wasting of the muscles. Actually, there are two types of muscle atrophy to be concerned with, one more severe than the other.ost of the time muscle atrophy is simply the result of disuse. While you would think that the leading cause of disuse atrophy is amongst people who are bedridden and unable to move about in order to exercise the muscles, the real culprit for the majority of muscle atrophy cases is a sedentary lifestyle.