1Single cell organism, Extracellular environment
A single cell organism is in contact with the extracellular environment.
2Multicellular organism, Intercellular environment
Multicellular organism is not in contact with the extracellular environment, needs to create internal environment. Homeostasis comes into play.
3What are the 3 different kinds of fluid compartments:
Intracellular fluid, Interstitial fluid, Plasma
4Body Organization for External and Internal
External - Air or lumen of body cavities
Internal - Extracellular fluid, Plasma, Interstitial fluid.
5Interstitial fluid
Surrounds the cell
6Extracellular fluid also known as...
Compartment, represents a distinct space within the body, separated from the intracellular fluid by cell membranes.
7Extracellular fluid
Serves as buffer zone between outside world and intracellular fluid.
8Organism in homeostasis, suffers from an external change:
Results in an internal change, internal change results in loss of homeostasis. Organism attempts to compensate. If compensation fails then it results in illness or disease.
9Body regulates the ECF, indirectly affecting _____.
Regulates both plasma and interstitial fluid.
10Environmental factors:
- Nutrients for cells, can be brought in from external environment.
- Blood O2 or glucose levels can be regulated via exchange.
11Homeostasis can be changed by what factors?
- pH
- Body temperature
- Chemical
- Nutrient levels
12Lungs and Kidneys will regulate what in the body:
- Lungs will regulate the blood O2 and CO2 levels
- Kidneys will regulate the salt and water content