BIOS1167 Lecture Notes - Lecture 1: Blood Sugar, Blood Vessel, Fluid Compartments
4 Sep 2018
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Document Summary
Internal balance in an external environment (unchanging) A change in the steady state is met by a counteractive response (physiological mechanism) Fluid compartments = intracellular fluid 66% (iron, proteins, glucose etc. Approx 42l of water in 70kg person. Processes that act to maintain stable internal conditions of the body despite changes in environment. Eg. core body temperature, fluid balance (volume, concentration), blood pressure/arterial pressure, oxygen/carbon dioxide levels, blood glucose levels. Maintain optimal conditions for enzymes (chemical reactions/functioning) Ability to respond is affected by age, genetics, general health. Balance between the current status of the physiological system and the stress imposed on the body. Attempt to reverse a disturbance eg. thermoregulation. Eg. body temp, blood pressure, co2, blood glucose. Attempt to accentuate the disturbance eg. childbirth. Controlled variable parameter being controlled eg. temperature (needs a set point) (eg. Controlled variable parameter being controlled eg. temperature (needs a set point) (eg. 37deg)
