Silently the stomach pours out, under nerve influence, its juices that dissolve and change parts of the food, that it may pass into the blood in condition to nourish. In a similar way, the pancreas pours out a fluid that digests the fats.
The muscular fibres of the intestines are caused to contract rhythmically and force along the bolus of digested food, so that its soluble parts may be taken up by the minute absorbent vessels to enrich the blood.
All these things of most vital importance we know least about. They go on, from day to day, without our being aware of the work done.
Let something interfere with the process, and how quickly is the sensation changed. Few there are who have not felt the agony of colic pain, due to stoppage of digestion. What suffering is greater than the sense of awful suffocation from a heart that is not acting well?
These are only familiar illustrations of a thousand and one distressing derangements and symptoms that come from exhaustion and prostration of the nervous system.
NERVOUS DEBILITY
OR EXHAUSTION.
This affection, also popularly known as Nervous Prostration, or Nervous Weakness, and, to the medical profession, as Neurasthenia, or Nervous Asthenia, is becoming alarmingly prevalent.