Blood cells, plasma and platelets are the elements of blood.
Blood, heart, blood vessels, lymph ducts and lymph nodes constitute the circulatory system
They are part of the circulatory system.
This is incorrect. R.B.C's are actually a part of the lymphatic system.
Blood gets oxygen in the cells. This is part of the body system.
White blood cells are part of the immune system.
White blood cells are a key part of your body's defense system and practically control your immune system.
The immune system is all over. White blood cells are part of it and are in your blood.
part of the immune system because they fight infection
Red blood cells are the cells that carry oxygen. The white blood cells are the cells that defend the body against infections.
About 25,200,000,000 white blood cells in an average human body. They are part of the immune system and will attack germs, viruses, etc. that are dangerous to the human body.
The circulation system in the body contains hemoglobin, more specifically the blood.
White blood cells are a part of the immune system, they attack and destroy foreign entities in the body. White bloods cells have a nucleus, whereas red blood cells do not.
The heart, blood vessels, and blood cells are parts of the cardiovascular system.
White blood cells are part of the immune system's defense. White blood cells flock to irritations and infections to heal or eliminate them.
Red bone marrow (which is actually part of the lymphatic system, not the skeletal system).