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Introduction to Physiology

Explain what physiology refers to Understand the term homeostasis and explain why it occurs Explain the concept of negative feedback and describe, using examples, how it is used to maintain homeostasis Explain positive feedback and give examples of when it occurs Explain why disrupted homeostasis leads to illness and death Name the body fluid compartments and state how much of the total body water each compartment comprises Describe the ionic compositions of fluid in each compartment Describe how fluid exchange occurs between the body and its environment Understand how fluid exchange occurs between the intracellular fluid (ICF) and the extracellular fluid (ECF) Describe how fluid exchange occurs between the plasma and interstitial fluid (ISF) These notes are from QUB Human Biology first year level.