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Grisactin (Griseofulvin Fulvicin)

###table###Grisactin(GriseofulvinFulvicin)
CENTRAL NERVOUS SYSTEM: BRAIN AND SPINAL CORD
The brain
What we might call this modern part of man’s brain is delicate and like the complicated, finely adjusted machines which he now makes, is easily put out of order. The popular conception is that the most important part of this up-to-date brain is the “gray matter” of the surface, forming the centers. A sharp-tongued lawyer of our town had an associate with a handsome shock of gray hair, but, in the opinion of our friend, little intelligence. The judgment passed was, “All his gray matter is on the outside of his skull.” Undoubtedly these centers are necessary for intelligence, but it is the myriad of white fibers, forming an almost infinite number of intercommunications, like – to use a weak simile – the wire of a big telephone exchange, which really allow involved thinking.
All this intricate mechanism is already laid down when the poor helpless human baby is born, but it is of little avail to him until he has been trained to use it. Why a child named Charles Darwin became so adept in its use while one of the nearby farm laborers made such slight progress is an unsolved mystery. Even an examination after death would throw no light on it.
As animals become more complex and what we call higher in the animal scale, the brain becomes relatively larger and more complex. The lowest type of function we call instinct, which is inherited full formed and cannot be changed. Human babies have a few instincts, the most prominent of which is the nursing reflex. Put anything into a baby’s mouth and he will start pumping in the same manner that produces milk from a breast. The comfort associated with this sucking may persist in a modified form throughout life.
The brain acquires habits, which have to be learned at first but by repetition become automatic. In fact, the brain practically relinquishes control over these, and if it asserts itself, the result is usually bad. You run rapidly downstairs without putting your mind upon it. If you should happen to think about where you are putting your feet, you would probably have to jump the remaining stairs to save your limbs.
The human brain, however, can cause variable, modifiable actions which are intelligent, and powers of this kind are what put us ahead of the brutes. Actions handled in this way are not so mechanically clever as those done by habit. The late Dr. Hugh Cabot told me that the Massachusetts General Hospital once brought an efficiency expert to the operating room to see if he could not eliminate waste motions. He soon gave up in despair. It was the surgeon’s intelligence which played the important part, and rarely did he feel at liberty to go blithely ahead like a sleight-of-hand man. In fact, Dr. Maurice Richardson, who was renowned for his surgical dexterity, said that almost any housewife in New England could sew more dexterously than he.
The spinal cord
Below the foramen magnum, in the bottom of the skull, the continuation of the central nervous system is called the spinal cord. It runs down in a bony canal inside the spinal column about as far as the small of the back. If the cord is sliced across at various levels, it will be found to vary a little in size and shape. At the neck and near the lower end it is enlarged somewhat where the nerves come off for the arms and legs. A cross-section shows a sort of H-shaped portion of gray matter inside. This consists of cells, and it is injury to these which causes the paralysis of poliomyelitis. The rest is white nerve fibers running down the cord.
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