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Blood Ch 25
Blood
Question | Answer |
---|---|
What is plasma | Plasma is the liquid part of the blood |
Name two things plasma is made up of | Water Proteins Dissolved materials eg glucose,amino acids,minerals |
What is the role of plasma | Transport dissolved materials Eg glucose,amino acids, minerals, vitamins, salts, carbon diixide, urea, hormones Carries heat |
What is serum | Serum is plasma from which the clotting proteins have been removed |
Where are red blood cells produced | Bone marrow |
What is the role of red blood cells | Transport oxygen |
What is another name for white blood cells | Leucocytes |
Role of white blood cells | Defend the body against infection and fight infections present in the body |
Name the types of white blood cells | Phagocytes Lymphocytes |
What are lymphocytes | Made in bone marrow Comprise of 25% of all blood cells Live for between 3 months and 10 years |
What is a function of lymphocytes | Make antibodies |
What are phagocyte/monocytes/macrophage | Formed in bone marrow 5% of white blood cells Survive for 6-9 days Kidney shaped nuclei |
Function of phagocyte | Scavenge throughout the body and surround and digest bacteria and other particles |
What causes leukaemia | White blood cells being reproduced too quickly and immature |
What are platelets | Produced in the bone marrow from large cells Breakdown to produce cell fragments called platelets Smaller than a red blood cell |
Role of platelets | Clot the blood |
Functions of blood clots | Reduce the loss of blood Prevent the entry of microorganisms ie pathogen |
What is pathogen | Pathogen is a disease causing organism |
What can haemophiliacs not do | Produce one or more clotting chemicals therefore cannot clot blood and may suffer from excessive bleeding |
What is thrombosis | When a blood clot may from and block a blood vessel |
What does a clot in the brain or heart cause | Brain- stroke Heart- heart attack |
Name the four main blood groups | A,B,AB,O |
What blood group can group O transfer with | All A,A,AB, |
What is the Rhesus factor | Found of the surface of red blood cells around 85% of people have it |
What could happen if a pregnant woman has rhesus negative and the baby is rhesus positive | First child is fine But any further rhesus positive child may be anemiac,brain damaged or still born |
What treatment is available | Special immune globulins called RhoGHAM |