Homeostasis and Cellular Physiology

These flashcards cover fundamental concepts of homeostasis and cellular physiology, including definitions of key terms and principles relevant to the functioning of cells and biological systems.

Homeostasis

keeping internal conditions stable while adapting to changes in the external environment.

Dynamic Equilibrium

A state where internal conditions can vary somewhat, but only within the margins set by the body.

Intracellular Fluid

Fluid found within cells.

Extracellular Fluid

Fluid found outside of cells.

Interstitial Fluid

Extracellular fluid located within tissues.

Electrolytes

Ions capable of conducting electrical current in solution; includes anions and cations.

Osmolality

The solute concentration in a fluid; higher solute concentration means higher osmolality.

Crystalloids

Fluids containing water and electrolytes used to help regulate osmolality.

Colloids

Fluid products containing large, heavy molecules used to improve blood pressure or low protein levels.

Isotonic

Fluids with osmolality similar to blood.

Hypertonic

Fluids with osmolality greater than blood.

Hypotonic

Fluids with osmolality lower than blood.