How does homeostasis work with the digestive system?

What does homeostasis mean and what are some facts about it?

Homeostasis means to have the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes.The concept of homeostasis is widely used, in physiology and psychology, to identify what seems to be a general attribute of living organisms: the tendency to maintain and restore certain steady states or conditions of the organism. An obvious example is that of body temperature, which in the human tends to fluctuate only in a narrow range about the value 98.6° F. When the temperature rises above the normal range, corrective reflexes (perspiration, reduced metabolism, etc.) go into action to restore the steady state. Persistent deviation may initiate other actions (moving into the shade, plunging into water, etc.). If body temperature drops, other corrective actions are observed.Many bodily steady states follow this pattern. Blood glucose level, blood pH, and osmotic pressure are examples. The key concepts are: an observable steady state that persists over time with minor changes; thresholds above and below this normal range; a sensory input that reports changes in the steady state; and effect or mechanisms for restoring the steady state.

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More facts

The biochemical and reflex defenses function adequately to protect some constancies; if blood osmotic pressure drops too low or vitamin concentration is too high, kidney mechanisms correct the situation. In other cases, the reflex machinery may fail, and learned behavior is activated. There are probably two thresholds in the system, one for reflexive response and another (further from optimum) that initiates voluntary action.Damaging the biochemical mechanism forces increased reliance on the learned systems of defense. Thyroidectomized rats build nests to protect against heat loss; parathyroidectomy or adren-alectomy leads to increased drinking of solutions containing calcium or sodium. It seems reasonable, therefore, to consider the cerebral cortex as the highest level of a homeostatic protective mechanism.

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Systems and how they work

How does junk food effect the digestive system

Junk food is a classic example of unbalanced diet usually characterized by high proportion of carbohydrates, refined sugar, salt, fats and low nutritional value, which can raise various health concerns like obesity, cardiac disease, diabetes, high cholesterol, high blood pressure etc.Effects of junk food on our digestive system: Junk food is unhealthy for digestive system as they slowdown the digestion process making the stomach bloated.When food is absorbed by the intestine it requires fiber and water to excrete but they don't have such nutrients which leads to poor digestion and irritable bowels.

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