| A | B |
|---|
| Receptor | component in a homeostasis-maintaining system responsible for monitoring conditions in the body and detecting any abnormalities |
| Control Center | component in a homeostasis-maintaining system responsible for processing negative feedback and sending out the appropriate hormones to communicate between the receptor and the effector |
| Effector | component in a homeostasis-maintaining system responsible for producing the corrective mechanism to restore normal conditions in the body |
| Negative Feedback | abnormalities or changes to the internal conditions which stimulate corrective mechanisms |
| Positive Feedback | abnormalities or changes to the internal conditions which stimulate an increase in abnormal conditions |
| Hypothalamus | small section of the forebrain responsible for many metabolic functions |
| Thermoregulation | temperature homeostasis |
| Endotherms | animals requiring a constant body temperature |
| Ectotherm | animals having variable body temperatures |
| Epinephrine | hormone, also called adrenaline, responsible for increasing blood circulation, breathing and metabolic rates |
| Vasodilation | widening of blood vessels |
| Acetylcholine | neurotransmitter responsible for regulating sweat |
| Norepinephrine | hormone responsible for increasing heart rate, releasing glucose in the body, and increasing blood flow to skeletal muscle |
| Vasoconstriction | shrinking of blood vessels |
| Arrector Pili Muscles | muscles attached to the hair follicles on the skin |
| Extracellular Fluid | all body fluid not in cells, includes plasma and tissue fluid |
| Hypercalcemia | too much calcium in the blood |
| Renal Failure | condition where the kidneys are no longer able to filter waste products from the blood |
| Hypocalcemia | too little calcium in the blood |
| Parathyroid Glands | small glands embedded in the thyroid responsible for raising the calcium level in blood |
