After appropriate digestion of nutrients, the function of the gastrointestinal tract is to absorb these nutrients so they may be used for a variety of cellular processes.
Absorption occurs across the cells lining the small intestine and proceeds via one of several mechanisms. The first is passive absorption, in which material moves along an electrochemical gradient. The second is facilitated transport, in which absorption of one substance is coupled to the transfer of another substance. (more…)
The regulation of fluid balance is crucial to survival. Approximately 9 L of fluid enters the gastrointestinal tract per day. Of that amount, about 2 L is ingested by mouth. The remaining 7 L consists of fluids secreted by the various gastrointestinal organs. Ninety eight percent of the total amount of fluid that enters the gastrointestinal tract is reabsorbed in the small intestine and the colon. (more…)

I’ve been noticing my body’s growing inclination to slow down, how it’s starting to get tougher to get off the couch, how it takes longer to heal, how I groan a little more when getting out of bed in the morning. I see a trend for the next 60 years.
And, I’ve been playing with it and experimenting with how to avoid all that. You too can avoid body aches and pains in elderly by following these 7 Easy Steps. (more…)