White blood cells which are also called leukocytes, are an important part of the immune system. There are five major types of white blood cells that are neutrophils, lymphocytes, eosinophils, monocytes and basophils.
These cells help fight infections by attacking bacteria, viruses, and germs that invade the body.
White blood cells originate in the bone marrow but circulate throughout the bloodstream.
An average normal range is between 3,500 and 10,500 white blood cells per microliter of blood (mcL)
Answer:
A carotid bruit is a vascular sound usually heard with a stethoscope over the carotid artery because of turbulent, non-laminar blood flow through a stenotic area.
You never put any of the answers
The answer is services. The other three are all factors of production. You need land or a place to create your goods and services. You have to have capital to run your production and sustain it. Then you need labor or people who will produce the goods and services that you are going to sell.
