Chapter 2 - Hygiene
Life, the Infancy of Being
Nervous System
Anatomy - Diagram 1
Anatomy - Diagram 2
Anatomy - Diagram 3
Anatomy - Diagram 4
Anatomy - Diagram 5
Anatomy - Diagram 6
How the Mind Gets Knowledge
Blood Pressure
Nerves of the Human Body - Diagram
Sympathetic Nervous System
Food and Digestion
Nature and Destination of Food
Cost of Food
Amount of Food Taken
Animal and Vegetable Food
Proportions of Animal and Vegetable Food
Tea and Coffee
Passive Exercise
Rest and Sleep
Objects of Clothing
Bathing and Cleanliness
Air and Ventilation

2.2 Nervous System

The Nervous System.

MAN is brought into connection with the outward world through the senses of feeling, seeing, hearing, etc. These communicate with the brain and mind through the nerves of sensation. The nervous system is divided into two great central portions, the brain and the spinal cord; and these together are called, by the learned, the cerebrospinal centre. There are numerous pulpy white cords, called nerves, which at one end are connected with this great axis or centre, and from thence run to all parts of the system. A portion of these nerves start from the base of the brain and run to the eye, the ear, the tongue, etc. (Fig. 48) ; while another, and a larger part spring from the cord which runs through the backbone, and are distributed over the body and the lower extremities (Figs. 50 and 60). One portion of these cords produce feeling; another part, motion. The former we call sensitive; the latter, motor. Both kinds are widely distributed over the body. Those which spring from the spinal cord have two roots, one uniting with the back, the other with the front part of the cord. part to which it is distributed loses it feeling. As we say in common language, it becomes numb, though it may move as well as before. Cut the front root, which is motion producing, and the part to which it goes cannot move. It is palsied, though it may still feel acutely. The numerous nerves that spring from the spinal column are pretty well represented in Fig. 60. If the cranial nerves of motion which go to the face be cut, no emotion or passion can be expressed. The features will all be immovable, like statuary. To smile, to laugh, to frown, to give expression to the feeling of pity, or anguisb, or love, is alike impossible. And yet a breath of air upon the face will be felt as readily as before. Paralysis, or palsy, as it is called, partial or general, is the result of injury upon few or many of these motion producing nerves. Neuralgia, tic douloureux, etc., arise from some disease, perhaps inflammation, of the nerves of sensation.

< Previous Sub-Category      Next Sub-Category >

Any statements made on this site have not been evaluated by the FDA and are not intended to diagnose, treat or cure any disease or condition. Always consult your professional health care provider.

copyright 2005, J. Crow Company, New Ipswich NH 03071

Privacy Policy for Household Physician

Email Us