Library · Physiology
Functions of Blood
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Blood keeps distant parts of the body connected. Picture a network that reaches every tissue, carrying oxygen, carbon dioxide, nutrients, hormones, and cellular waste from place to place.
The same blood also helps distribute heat, defend against infection, and carry out hemostasis, the process that slows blood loss. Blood does not have just one job; it coordinates transport, defense, and bleeding control.
In brief
Blood connects tissues by transporting oxygen, carbon dioxide, nutrients, hormones, and cellular waste. It delivers oxygen, nutrients, and hormones to tissues while carrying carbon dioxide and cellular waste away from them.
In addition to transport, blood helps regulate temperature, defend against infection, and carry out hemostasis, the process that limits bleeding. Together, these functions allow blood to connect tissues throughout the body.
Sources (1)
- National Center for Biotechnology InformationChapter 10 Blood Terminology
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