Articles liés à The Autonomic Nervous System, Vol. 1 (Classic Reprint)

The Autonomic Nervous System, Vol. 1 (Classic Reprint) - Couverture souple

John Newport Langley

 
9781331940845: The Autonomic Nervous System, Vol. 1 (Classic Reprint)

Synopsis

Excerpt from The Autonomic Nervous System, Vol. 1

The autonomic nervous system consists of the nerve cells and nerve fibres, by means of which efferent impulses pass to tissues other than multi-nuclear striated muscle.

The progress of knowledge of this system has been continuous for at least the last 250 years, though at times it has progressed but slowly. As knowledge increased, new points of view presented themselves, and the terms used to express the general conceptions naturally varied. I give a short historical account of these terms, omitting, as far as practicable, reference to the actual state of knowledge at the successive periods.

Voluntary and Involuntary. In the early part of the 18th century the movements of the various parts of the body were commonly divided into three classes, viz. (1) voluntary movements, (2) involuntary movements which could also be produced by the will, such as the movements of the respiratory muscles in sleep and instinctive movements, (3) involuntary movements over which the will had little or no control, such as the movements of the heart and intestines; this form of involuntary movement was called vital or natural movement.

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