Concept of Homeostasis - Body systems maintain homeostasis, a dynamic steady state in the internal environment - Homeostatically Regulated Factors

6 important questions on Concept of Homeostasis - Body systems maintain homeostasis, a dynamic steady state in the internal environment - Homeostatically Regulated Factors

Why is the concentration of O2 and CO2 regulated to maintain homeostasis?

Cells need O2 to carry out energy-yielding chemical reactions. The CO2 produced during these reactions must be removed so that acid-forming CO2 does not increase the acidity of the internal environment.

Why is the concentration of waste products regulared to maintain homeostasis?


The end products of some chemical reactions have a toxic effect on body cells if these wastes are allowed to accumulate.

Why is pH regulated to maintain homeostasis?

Changes in the pH (amount of acid in IE/ECF) of the ECF adversely affect nerve cell function and wreak havoc with the enzyme activity of all cells
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State the 2 reasons as to why concentrations of water, salt, and other electrolytes are regulated to maintain homeostasis?

water and salt control volume of cells (the ICF), concentations of these control how much water enters and leaves the cell which is important becuase cells do not function normally when they are swollen or shrunken
electrolytes are formed from ions in solution and conduct electricity

Why is pressure and volume regulated to maintain homeostasis?

The circulating component of the IE, the plasma, must be maintained at good  enough volume and blood pressure to make sure blood is distrubuted bodywide.

Why is temperatire regulated to maintain homeostasis?

Body cells function best within a narrow temperature range. If cells are too cold, their functions slow down too much; if they get too hot, their structural and enzymatic proteins are impaired or destroyed

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