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15 Cards in this Set

  • Front
  • Back
cells
basic functional and structural living units and no matter how differentiated they become they all exhibit the fundamental activities common to all forms of life
cell function
transport
metabolism
growth and differentiation
movement
hereditary transmission
detect and respond- cell signaling
extracellular fluid
the fluid which bathes each cell in the body
homeostasis
maintenance of constant conditions in the internal environment
control systems often show
hierarchical control
redundancy
competition between systems
intracellular fluid % body weight
40% of body weight
extracellular fluid % body weight
20% body weight
extracellular fluid compartments
blood plasma
interstitial fluid and lymph
bone and dense connective tissue
special fluid systems
osmosis
water moves from areas of higher solute concentration and lower water concentration
osmotic pressure
amount of pressure required to stop osmotic water movement
osmolarity
total number of solute particles dissolved in a liter of solution
tonicity
tendency of a solution to resist expansion of cells intracellular volume
isotonic
no water movement occurs
hypertonic
high concentration outside
cell collapses
hypotonic
low concentration outside
cell expands - hemolysis