Explain what the listed blood functions are expressed in.

Blood function:
1. Respiratory – provides gas exchange in tissues and lungs.
2. Nutrient – delivers nutrients, water and vitamins to tissues and organs.
3. Excretory – removes decay products through the organs of excretion.
4. Thermostatic – maintains a constant body temperature.
5. Regulatory – provides humoral regulation of the body.
6. Protective – contains phagocytes, antibodies

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