White blood cells (WBCs), also called leukocytes , are a vital part of the human immune system. Their main role is to defend the body against infections, harmful microorganisms, and foreign substances. Unlike red blood cells, which carry oxygen, white blood cells are primarily responsible for protection and immunity. General Features Production: They are made in the bone marrow from stem cells. Circulation: They move through the bloodstream and lymphatic system, constantly monitoring for signs of infection or injury. Lifespan: Depending on the type, they may live for hours (neutrophils) to years (some lymphocytes). Normal count: About 4,000–11,000 per microliter of blood in healthy adults. white Blood cells Main Types of White Blood Cells There are five primary types, each with specialized functions: Neutrophils Most abundant (50–70% of WBCs). First responders to infections,...
This website provides clear and informative content about human anatomy and the structure of the human body. It explains major organs such as the heart, brain, lungs, liver, kidneys, and digestive system, along with their functions and importance. The site helps students, teachers, and learners understand how different organs and body systems work together to keep the human body healthy and functioning properly. It is a useful resource for learning basic anatomy in a simple and easy way.