White blood cells

• Multicellular organisms require transport systems to supply their cells and remove waste products.
• The development of cardiovascular disease can be discussed on a cellular level.
• In humans, one of the functions of the circulatory system is to transport substances.
• Red blood cells are stained pink, platelets are stained pale pink, white blood cell cytoplasm is stained pale blue, and white blood cell nuclei are stained magenta.
• The heart is a part of the circulatory system.
• Circulation is controlled by the heart rate.
• Blood vessels are part of the circulatory system.
• White blood cells are part of the circulatory system.
• The development of cardiovascular disease can be evaluated.
• Treatment methods for cardiovascular disease include heart transplants.
• The evaluation of different treatment methods for cardiovascular disease can be done by taking pulses and calculating blood flows.
• There are several main types of white blood cell, including phagocytes, which make up about 70 per cent of white blood cells.
• Phagocytes engulf and destroy unwanted microorganisms that enter the blood, by the process of phagocytosis.
• Phagocytes are part of the body's immune system.
• Soft tissue found inside bones that produces new blood cells.
• Blood products are components of blood that are given to a patient by transfusion.
• Patients rarely receive transfusions of whole blood in modern medicine.
• Many types of blood cell are 10 μm in size or less, and require high power to examine them.
• Lymphocytes make up about 25 per cent of white blood cells and are also part of the body's immune system.
• The slides will have been stained to show the cells, and cell features.
• Blood products include: red blood cells, platelets, plasma, and antibodies.
• Before a transfusion, white blood cells are often removed to reduce the risk of infections or immune reactions.
• The micrograph shows many red blood cells and three white blood cells.
• Blood products can then be given to patients depending on their needs.
• For transfusion, blood must be compatible with that of the patient's blood, for instance, their blood group.
• An example of a commonly-used stain is Giemsa stain.
• Platelets are cell fragments produced by giant cells in the bone marrow close to the bone marrow.
• Lymphocytes produce soluble proteins called antibodies.
• Blood products are produced from blood from blood donors.
• Platelets stop bleeding in two main ways: they have proteins on their surface that enable them to stick to breaks in a blood vessel and clump together, and they secrete proteins that result in a series of chemical reactions that make blood clot, which plugs a wound.
• Blood products are screened for: infectious agents such as HIV, their blood group, and the presence of certain antibodies.
• When a foreign body such as a microorganism enters the body, lymphocytes produce antibodies to attack the foreign organism.