White blood cells are most closely associated with the circulatory system and the immune system.
What are white blood cells?
White blood cells are a type of cell that belongs to the bloodstream, and has functions related to the protection of the body against infectious agents, bacteria or viruses.
Characteristics of the white blood cells
- They are produced from stem cells in the bone marrow and are released into the bloodstream when the body needs them, forming part of the circulatory system.
- They are part of the body's immune system and help fight infections and other diseases, recognizing invaders and destroying them.
Therefore, we can conclude that white blood cells are formed by the bone marrow and act in different ways depending on the harmful agent that is to be attacked.
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