Human blood is a connective tissue composed of a fluid, plasma and blood corpuscles. It is a circulating fluid, which not only provides body organs with nutrients and oxygen, but also removes waste from them.
This course covers human blood, blood cells, and blood disorders.
Functions of Human Blood
Blood has many vital functions, such as the following:
- transporting oxygen and nutrients to the lungs and tissues
- forming blood clots to prevent excess blood loss
- carrying cells and antibodies that fight infection
- bringing waste products to the kidneys and liver, which filter and clean the blood
- regulating body temperature
- maintaining fluid balance
Blood is considered a connective tissue for two basic reasons. Just as other connective tissues, it originates from the mesodermal layer of the embryo .