Final answer:
Blood serves three main functions in the body: transportation, regulation, and protection.
Step-by-step explanation:
Functions of Blood in the Body:
- Transportation: Blood carries oxygen, nutrients, hormones, and waste products throughout the body. For example, it transports oxygen from the lungs to the body cells.
- Regulation: Blood helps regulate body temperature, pH balance, and fluid balance. It plays a role in maintaining homeostasis.
- Protection: Blood contains white blood cells that help defend the body against infections. It also carries antibodies and other components of the immune system.
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