stable - normal, balanced, internal - inside, external - outside, homeostasis - to maintain stable, normal internal conditions; balance, disruption of homeostasis - something that stops homeostasis - is a bad thing - not stable, regulate - to control or maintain; in the human body the brain is vital for regulation, stimulus - an internal or external event or change that triggers a response in the body., response - how an organism reacts to a stimulus and results in a change in behavior., dynamic equilibrium - Responding to a stimulus in order to return to normal body functions. maintain homeostasis, feedback mechanism - a loop (cycle) that brings the body toward or away from normal range; helps maintain homeostasis., excrete - remove; release; get rid of; out, ATP - energy molecule made by the mitochondria of a cell, cellular respiration - A process that uses oxygen & glucose to produce ATP energy and releases carbon dioxide and water., mitochondria - the organelle in the cell that makes energy through cellular respiration, muscle fatigue - when the muscles feel tired because of the buildup of waste products like lactic acid., prevent - stop, blood - transports oxygen and nutrients to the cells and transports waste out, sweat - sudor; released by the skin to cool temperature down; contains water and salts., oxygen - gas we inhale using the lungs of the respiratory system; is transported by the blood , glucose - a simple (small) sugar our cells use to make ATP energy after they are digested from our food., carbohydrates  - large molecules in food like bread and fruit. We digest (break down) carbohydrates into many sugars for fast energy., increase - go up; higher; gain, decrease - go down; lower; lose, maintain - keep - we also want to maintain homeostasis, lactic acid - a waste that builds up in the muscles during exercise because of low oxygen; causes muscle fatigue, lack of - not have; not enough, insulin - a hormone released by the pancreas when blood sugar is high. Regulates blood sugar level back down to normal., pancreas - the organ that releases insulin, diabetes - a disease when a person cannot regulate their blood sugar level (they cannot make insulin!), receptors - communication molecules on the membrane of cells (think lock and key), osmosis - the diffusion of water through the cell membrane (water can go in or out of the cell), kidneys - organs that produce urine and regulate water balance in the body., brain - the organ that controls everything; sends and receives signals, saltwater - water with dissolved salts - causes most cells to lose water and shrink, distilled water - pure/freshwater; causes most cells to gain water. They can burst if there is too much water, solute - a substance that can dissolve in water (like salt and sugar), urine - pee; mostly made of water, and contains other wastes., cell membrane - the organelle that's the outside of a cell; it controls what goes in and out of the cell, high concentration - large quantity (more), low concentration - small quantity (less), body systems - many organs that work together to help you survive and maintain homeostasis (examples: respiratory system, digestive system), waste - garbage; materials to get out that we do not need, blood glucose level - the amount of sugar in the blood; increases after we eat; the sugar is used to make energy; then insulin lowers it back down to normal., heart rate/pulse rate - how fast the heart is beating - increases during exercise to transport blood faster to the muscles and remove waste faster, breathing rate - how fast you breathe - increases during exercise to get more oxygen in and remove carbon dioxide waste faster,

Homeostasis

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